China Wuhan Desheng Biochemical Technology Co., Ltd Company News

In recent days, the weather in many parts of the south is still relatively good, but suddenly a north wind blows, and the temperature drops. Yesterday it was nearly 30 degrees, today it is only more than 10 degrees. As the temperature drops, I hear the feedback from customers. When the weather gets cold, it's always difficult to add glue every time.   In view of this problem, as a manufacturer of vascular additive, we have also carried out various experiments, so what is the problem?   The results showed that: 1. Serum separation gel is still a glue body with viscosity, and the viscosity has a certain relationship with temperature. When the temperature is too low and the weather is cold, the viscosity of separation gel increases, and the process of adding glue is difficult.     2. Serum separation gel is a mixture, but the uneven distribution of individual molecules will also lead to the phenomenon of jam and difficulty in the process of adding gel.   3. In winter, the glue is heated. The separating glue can withstand the high temperature below 80 ℃. Now many equipment production company glue machine with heating function, for blood collection enterprise provides a solution. In addition, part of the problems can be solved by reducing the viscosity of the separating gum.   Generally speaking, it is difficult to add the separating glue, and the temperature has a lot to do with it. If you know the reason why it is difficult to add the serum separation gel, you can start to solve it one by one. Of course, there must be a premise, a sound R & D team, which can constantly adjust the difficulty of adding the serum separation gel due to the change of temperature, and then continue to experiment to achieve a good balance. As a manufacturer, Desheng has a professional research team and the determination to solve problems.

If you ask what can quickly open up the topic of beauty, it's certainly cosmetics and skin care products. Not only have they become indispensable for women's skin control, but even men have to "grab a share". The demand for skin care and make-up is becoming more and more common. Many people may not know that there is a very important raw material in their skin care products - carbomer Is one of the indispensable ingredients, so why does carbomer's position in the cosmetics industry remain high? The following five reasons are for reference only.   1. Carbomer has good transparency in cosmetics. Don't underestimate the problem of transparency. The transparency produced by different manufacturers is different. Carbomer products with high transparency are more popular in the market. It can be imagined that if the cosmetics made from carbomer raw materials do not have a good transparency, there will be no good concept The final product will make customers have no desire to buy. The carbomer 940 produced and developed by Desheng has high transparency and viscosity, which can meet the needs of most buyers.   2. carbomer does not support bacterial mold growth. Bacterial mold growth does not affect gel properties. The conventional dosage is 0.2-0.4%, which can replace 3-7% of conventional emulsifier. Carbomer polymer hardly has the property of surfactant, so adding 0.1-0.5% low HLB surfactant can adjust the oil phase particles to be smaller, so as to prepare white and delicate cream products.   3. carbomer is a macromolecule polymer, thickener, gel and emulsifying stabilizer. Carbomer has good compatibility with pH, and can be used in both acidic, neutral and alkaline conditions. As we all know, pH value of skin care products is a very important factor. Different skin types are suitable for skin care products with different pH values. Carbomer as a good gel matrix can be applied to skin care products with different PH values, so that more skin care products with high skin value suitable for different skin types can be made possible.   4. carbomer in cosmetics, skin care products, the main role is thickening agent, emulsifying stabilizer, gel, the risk coefficient is 1, relatively safe, can be used at ease, for pregnant women generally have no effect, Carbomer is not carcinogenic.   5. at a very low dosage (regular dosage of 0.25-0.5%), it can produce an effective thickening effect, thus preparing a wide viscosity range and rheological properties of emulsion, cream, gel and transdermal preparation. This is also a very important factor. If a product needs a high amount of material to achieve the corresponding thickening effect, it will undoubtedly increase the procurement cost of a product.   Desheng is a professional carbomer manufacturer. Carbomer 940 is very suitable for all kinds of cosmetics. It should be noted that when the skin care products are applied, Carbomer's final concentration is controlled less than 0.8%. It is suggested that it is suitable for about 0.5%. When the concentration is more than 0.8%, it is easy to form a film. Add as appropriate, the company can provide professional and technical guidance, welcome to call the detailed consultation.

In vitro diagnosis is the cornerstone of modern medical diagnosis, treatment, prevention, prognosis and other clinical decision-making, which can be called "medical scout". At present, the contribution of in vitro diagnosis to clinical medical decision-making has exceeded 70%. From a certain point of view, the 21st century is the century of biotechnology, in vitro diagnosis industry has become one of the most active and fastest growing industries in the world.   Although China's in vitro diagnosis industry started late, it developed rapidly, and the domestic market competition is becoming increasingly fierce. Throughout the current situation and atmosphere of domestic industrial development, in vitro diagnosis industry has the conditions for scale development. Although at this stage, local in vitro diagnostic enterprises are still facing many difficulties and challenges, driven by relevant national policies and aging population and other factors, in the future, China's in vitro diagnostic industry will have broad development space and rare opportunities, and in vitro diagnostic products will also develop in the direction of automation, integration, convenience, miniaturization, personalization and informatization.   Basic concepts   In vitro diagnosis refers to the process of obtaining clinical diagnosis information by detecting the samples (including blood, body fluid, tissue, etc.) obtained from human body in vitro. The in vitro diagnostic system is composed of the instruments, reagents and consumables needed in the detection process. The enterprises engaged in the R & D, production and marketing of these instruments, reagents and consumables have formed the in vitro diagnostic industry, which integrates biology, medicine, machinery, optics, electronics (Microelectronics), computer, engineering, industrial design and manufacturing and other related technologies.   Different from the international practice, there is no separate concept of IVD in China for a long time, and IVD products have not been defined independently. The products included in the common international concept of IVD have been scattered, and they belong to medical devices, IVD reagents and drugs respectively.   Development status   China's in vitro diagnosis industry started in the 1980s. After 30 years of development, it has the conditions for industrial scale development and is in a critical period of development. China's IVD industry is in a period of rapid development. China's population accounts for one fifth of the world's total population, but China's in vitro diagnosis industry accounts for less than 15% of the global share, and has a broad market space.   In recent years, with the hard work of local IVD enterprises, the level of production technology and product quality have been improved, and the variety of products has become increasingly rich. Domestic IVD equipment and reagents have been gradually accepted by users at home and abroad. The national medical service catalog has standardized the pricing of in vitro diagnosis and other items. IVD reagents are included in the list of charges by item. However, the prices of the products of the international mainstream IVD enterprises are generally 1-5 times higher than those of the domestic similar products, with obvious price disadvantages. This makes the advantages of high cost performance of domestic IVD products in the domestic market, especially in the middle and low-end markets such as secondary hospitals and primary hospitals More competitive.   At present, foreign IVD products (such as Roche, Abbott, etc.) are still dominant in high-end markets such as tertiary hospitals in first tier cities. Other markets have been generally occupied by local IVD enterprises. There is a trend that domestic products have replaced imported ones in some middle and low-end testing markets, which is more significant in terms of in vitro diagnostic testing reagents, especially domestic biochemical reagents. In foreign markets, domestic IVD products have achieved zero breakthrough and developed rapidly, showing a steady growth trend in product types and quality. In addition, from the perspective of market segments, molecular diagnosis and POCT will be the focus of industry development, and will also be the main areas of market competition in the future.   Future direction   In China's development plan, high-performance medical devices, biomedicine and medical informatization have been identified as key breakthrough areas. The market scale of in vitro diagnosis still has great potential. The market demand of in vitro diagnosis will be more diversified, the service mode will be more diversified, and the industry environment will be more standardized and orderly. Technological innovation will become the key to win in the industry. The development trend of in vitro diagnosis industry will present seven trends: systematization, integration, automation, informatization, individualization, miniaturization and convenience.   With the development of society, higher requirements will be put forward for in vitro diagnosis. It is necessary to achieve both rapid detection and consistent with the measurement results of complex technology and large-scale laboratory equipment, so as to strive for valuable time for clinical diagnosis and treatment. Therefore, the "convenience" of equipment is one of the problems that must be considered in in vitro diagnosis. While ensuring the accuracy and traceability of instruments, reagents, calibrators and quality control materials, it is very convenient and fast to use, such as POCT and wearable medical equipment, which will have a good prospect. At the same time, this kind of equipment also has broad application space outside medical institutions (such as home use). In the future, this kind of product will be one of the fastest growing varieties for quite a long time.   Finally, enough attention must be paid to mass spectrometry. At present, mass spectrometry technology has been more mature for microbial identification, small molecule detection, trace element determination, reference method establishment, etc. its unique technical advantages and cheap detection cost will bring unexpected development. In the future, the application of in vitro diagnosis will be beyond imagination.   Desheng biochemical is specialized in R & D, production and sales of vascular additives, in vitro diagnostic reagents, buffers and luminescent substrates. We have a wide range of products and sufficient inventory to provide customers with one-stop purchasing service. Desheng technology will continue to develop and research advanced biochemical reagents to meet the needs of the development of global medical laboratory technology and strive for human health. We hope that through the efforts of all Desheng employees, we can create a world that belongs to Desheng in the in vitro diagnosis industry.

The novel coronavirus infection cases of pneumonia are newly diagnosed every day. The new data of the confirmed and suspected cases and the judgement of the epidemic situation have become the common behavior of people during this Spring Festival holiday. So, how is each new confirmed case confirmed?   The novel coronavirus, influenza virus, hand foot and mouth disease virus and other common virus samples are collected, preserved and transported. Pharyngeal swab, nasal swab or tissue samples of specific parts can be collected, and the stored samples can be used for subsequent clinical trials such as nucleic acid extraction or purification. Virus preservation solution (inactivated) [collection method] 1. Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with two plastic swabs with polypropylene fiber heads at the same time, immerse the swab head into a tube containing 3ml virus preservation solution (isotonic salt solution, tissue culture solution or phosphate buffer solution can also be used), discard the tail, and tighten the tube cover.   2. Nasal swab: gently insert a plastic rod swab with polypropylene fiber head into the nasal cavity and palate in the nasal meatus, stay for a while, and then slowly rotate to exit. The other side of the nostril was collected with the same method. Immerse the two swabs into the same tube containing 3ml of sampling solution, discard the tail and tighten the tube cover.   3. Nasopharynx extract or respiratory tract extract: extract mucus from nasopharynx or respiratory tract secretion from trachea with collector connected with negative pressure pump. Insert the collector's head into the nasal cavity or trachea, connect the negative pressure, rotate the collector's head and exit slowly, collect the extracted mucus, and flush the collector with 3ml sampling solution once (or connect a pediatric catheter to a 50ml syringe to replace the collector).   [product advantages] The system contains high-efficiency virus lysate, which can inactivate the virus immediately after sampling and effectively prevent the risk of secondary infection.   It contains RNase inhibitor, which can protect the viral nucleic acid from degradation to the maximum extent and greatly improve the efficiency of nucleic acid extraction.   The product can be stored at room temperature for 12 months before sampling, and for one week after sampling. It has good tightness, convenient storage and transportation, and saves transportation cost.   The product is equipped with two sampling rods to improve the sample collection quantity and effectively avoid insufficient sample collection and low concentration sample missing   The 5ml centrifuge tube can avoid the contamination of the pipette during the later sample transfer.

Serum separation gel is a kind of viscous fluid, which contains a lot of hydrogen bonds in its structure. The network structure is formed due to the association of hydrogen bonds. Under the action of centrifugal force, the network structure is destroyed and becomes a fluid with low viscosity. After the centrifugal force disappears, the network structure is formed again and returns to a fluid with high viscosity. This property is called thixotropy.   When the gel and the coagulated blood are centrifuged in the same test tube, the gel forms a gel like isolation layer between the serum and the blood clot to separate the serum and the blood clot. Thus, the yield of serum is improved, the serum is preserved in the original state, the clinical test process is simplified, and the work efficiency is improved.   Nowadays, the raw material of separation gel is polyester or polypropylene. The raw materials of separation gum are polyolefin, polyester and propylene. The accelerators are silica powder, silica carbon and snake venom, which are sprayed on the pipe wall. The separation gel is placed at the bottom of the test tube, injected into the blood sample, and centrifuged in the centrifuge after blood coagulation. The separation gel forms an isolation layer between the serum and the blood clot, and keeps the serum unchanged. The isolation layer adheres to the wall of the test tube tightly, and the serum can be directly absorbed by the automatic analyzer in the original state, or stored in cold storage. Long distance transportation does not affect the test results, and also avoids the influence of fibrin and hemolysis.   In addition, the whole process of blood sample injection into blood collection vessel, serum separation, analyzer direct serum collection, blood sample preservation and waste treatment is carried out in the same branch pipe, so as to avoid blood sample contamination of operators, prevent virus infection in blood, reduce medical waste and improve work efficiency. Therefore, the application of blood separation gel blood vessel in medical examination is indispensable. There are many people who are full of doubts about the need to shake when using the serum separation gel coagulation promoting tube? The answer to this question is yes.   In general, the operation of the gel coagulant tube for serum separation is to gently reverse the blood collection tube immediately after blood collection for 4-5 times to mix the sample. The strength is appropriate and should not be too large. It needs to be placed for 30 minutes to wait for the sample to fully coagulate, the centrifugal radius is 200 Px, the centrifugal speed is maintained at 3500-4000 R / min, and the centrifugal time is 10 minutes. The serum and blood clot are completely separated by the separation gel, and the serum samples can be directly detected on the computer or transferred to the test cup of the instrument.   Desheng has 15 years of rich experience in R & D and production of blood vessel additives, and has formed independent intellectual property rights and professional production and R & D capacity in the aspect of blood vessel additives. To provide products and raw material solutions for more than 100 domestic and foreign manufacturers. The serum separation gel produced by Desheng is radiation resistant, and is specially used to manufacture disposable vacuum blood collection vessel and injection blood collection vessel. It is a necessary material for the preservation, transfer and transfer of high-quality serum and blood samples in clinical examination.

Serum separation glue is mainly composed of macromolecular hydrocarbons and hydrophobic glue. As a kind of macromolecular polymer, it is insoluble in water and inert. It is a thixotropic viscose liquid with a density of 1.04-1.05 mmol / L. it has the advantages of oxidation resistance, high temperature resistance, low temperature resistance and good gas tightness.   The reason why serum separation gel can separate serum and blood cells is that the density of serum is 1.026-1.031 mmolgl, while the density of blood cells is 1.090-1.095. Due to the specific gravity, the separation gel is just between serum and blood cells, so generally, after blood centrifugation, there are three layers of serum, separation gel and blood cells in turn. There are two kinds of commonly used separation gel collecting vessels in laboratory: serum separation gel coagulant promoting tube and plasma separation gel anticoagulant tube. Serum separation gel coagulant tube is to add coagulant to the blood collection vessel to shorten the blood coagulation time, quickly get the serum, and report the results in the shortest time. There is no need to add coagulant in the glass collecting vessel, blood contact with the glass tube wall will trigger coagulation. When factor XI and factor Ⅻ contact plastic blood collection vessel, their activation ability is very weak, so coagulants need to be added to shorten the coagulation time. Plasma separation gel anticoagulant tube is sprayed with heparin lithium and other anticoagulants on the inner wall of separation gel blood vessel to meet the needs of rapid plasma biochemical emergency test.   At present, the serum separation gel has been widely used in clinical laboratory. The separation gel can form an isolation layer between cell components and serum (plasma), effectively prevent the material exchange between blood cells and serum (plasma), and ensure the stability of serum (plasma) components in a certain period of time. In the clinical application of separation gel, many non-standard operations will affect the separation effect, and some separation gel can be used The blood collection vessel interfered with some test items. These problems are not easy to be found in daily quality control and routine testing. In order to ensure the authenticity of the test results, it is very important to do a good job in the quality control of blood samples before testing.   Desheng is a high-quality manufacturer specializing in the production of serum separation gel. In addition to striving to improve the quality, it is also committed to providing laboratory personnel with a set of clinical blood sample solutions, that is, operation specifications in the process of blood collection, transportation, storage, blood collection and centrifugation, so as to truly achieve first-class quality and service.

With the repeated reversal of the epidemic situation, anti epidemic has become the primary concern of human beings. We should not only prevent the spread of the epidemic, but also protect our own safety, especially the staff who collect virus samples. If the virus is not collected, it is likely to be infected. Therefore, in such a severe test, the emergence of disposable virus preservation tube greatly reduces the risk of infection and ensures the safety of our front-line personnel. Disposable virus storage tube   Methods of specimen collection 1. Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with two plastic swabs with polypropylene fiber heads at the same time, immerse the swab head into a tube containing 3ml virus preservation solution (isotonic salt solution, tissue culture solution or phosphate buffer solution can also be used), discard the tail, and tighten the tube cover.   2. Nasal swab: gently insert a plastic rod swab with polypropylene fiber head into the nasal cavity and palate in the nasal meatus, stay for a while, and then slowly rotate to exit. The other side of the nostril was collected with the same method. Immerse the two swabs into the same tube containing 3ml of sampling solution, discard the tail and tighten the tube cover.   3. On the label of PE pipe, write down the type of sample, sampling time, number and name of patient with oil marker.   4. After the collection, put the disposable virus storage tube into the special transport box (or vaccine transport box), put it into the ice cube, and then fill it with soft material and seal it. It should be transported by special person instead of mail. It is better to use the special vehicle.   5. If the collected specimens cannot be delivered within 24 hours, they should be stored below - 70 ℃ as soon as possible. If there is no - 70 ℃ condition, it should be stored in the refrigerator at 4 ℃ for a short time, and the specimen should be delivered as soon as possible.   6. Influenza virus is unstable from - 20 ℃ to - 40 ℃, so it is best to keep it below - 70 ℃ for a long time.   In this case, it greatly protects us, and at the same time, it also protects the virus from failure after degradation, resulting in false negative. Disposable virus preservation tube is a hero in the protection of the epidemic. Desheng biochemical company specializes in VTM and some products. If you need, please contact us!

As we all know, for patients with diabetes, in addition to fasting blood glucose and postprandial blood glucose, glycosylated hemoglobin, as a gold indicator of blood glucose control, can reflect the average level of blood glucose control in 2-3 months, and should be reviewed every two to three months. In addition, there are two tests are also very important, that is, patients with diabetes often need to go to the hospital for insulin and C peptide testing.   Insulin is a very important hormone for human body, it has a good effect in lowering blood sugar. Studies have shown that there are many methods to measure insulin, and the requirements of each method are different. So this article will take friends to understand the detection methods of insulin?   Insulin is a peptide hormone secreted from islet B cells. Insulin secretion is insufficient, which can cause diabetes. But with the continuous improvement of people's living standard, the development of medical level and the change of people's concept of health, the incidence rate of diabetes is increasing rapidly. It has become a chronic and serious disease that plagues many elderly people. At present, chemiluminescence immunoassay (CLIA), enzyme-linked immunosorbent assay (ELISA) and radioimmunoassay (R1a) are the most commonly used methods in clinic.   The following is a brief introduction to the basic detection principle of insulin. The function evaluation of islet B cells is usually achieved by measuring insulin in serum. In the radioimmunoassay experiment, excessive labeled antigen * Ag and unlabeled antigen Ag (i.e. the antigen to be tested) are added to competitively bind with a small amount of antibody (AB). If the radioactivity of the conjugate (* Ag AB) measured by the experimental results is higher, it means that the concentration of the substance to be measured is lower. If the radioactivity of the measured conjugate is low, it means that the concentration of the analyte is high. By analyzing the standard curve, the concentration of the analyte can be calculated.   In 1960, the rapid development of endocrine science fully proved the great impetus of radioimmunoassay. In 1977, the inventor of this technology won the Nobel Prize for biomedicine. Subsequently, this new technology quickly penetrated into other fields of medical science, such as virology, pharmacology, hematology, immunology, forensic medicine, oncology, etc. radioimmunoassay plays a great role in promoting the progress of biomedicine in China. Desheng biochemical has a lot of raw materials supporting immunoassay, such as chromogen substrate, chemiluminescence reagent, biological buffer, etc.   The above is the method of insulin detection, hope to help friends. In fact, friends in the detection of insulin or should be in the morning 7 ~ 11 o'clock, and take the morning of the first small make-up to the hospital. In the diet or should pay attention not to eat with more sugar food. Otherwise, we will see the results of insulin test. If so, what do not understand the place can also look for expert consultation

After experiencing a wave after wave of shocks, carbomer has completely stabilized the domestic market. Many manufacturers have invested in Boca. However, it is difficult to buy high-quality and low-cost carbomer products when purchasing. The quality of the products is not satisfactory. Now I'd like to share with you how to buy high-quality and low-cost carbomer.   1. Carbomer products are all from manufacturers   When you buy products, try to find the manufacturer to reduce the price difference between middlemen. Desheng is a manufacturer with a professional R & D team, with 6 technicians and 10 production personnel.     2. Is there any spot supply   It is believed that the buyers of Carbomer, after consulting many companies, find that even though the number of suppliers has increased a lot, the supply of carbomer raw materials has not improved much. There are still many manufacturers who are in the list and do not supply in time. In addition, many manufacturers started production after the epidemic. Both the production equipment and technology are not mature enough, resulting in a small production volume. Therefore, it is still difficult to buy carbomer. Desheng, as the real producer of carbom, has sufficient stock and an average daily output of 3-5t.   3. Product quality   As a manufacturer of Carbomer, Desheng supports customization of some indicators for different industries and uses. Moreover, the carbomer powder produced by us is obviously white, and the powder is more fluffy and delicate. In the configuration of solvent, the transparency is much higher than that of similar products. The conventional carbomer is made into gel, the appearance is more transparent, and the viscosity can be customized according to individual indexes.     4. Is there a perfect after-sales service   When we buy any product, we can't say that there are no problems. If there is no good after-sales service in case of quality problems or other problems, who should we look for in the middle of any loss? So it is very important to find a manufacturer with perfect after-sales service. And Desheng company has perfect after-sales service. Desheng promises that any quality problem can be returned or replaced. Free samples can be applied for trial, so that the trial before purchase.   5. Is there a reasonable price   Finally, with the above conditions, we are most concerned about the price. Generally, the price of good products will be on the high side. However, in order to thank you for your strong support, Desheng has launched a limited time discount before the year. The price is as low as 130 yuan / kg. Don't have any doubt, as long as the customers who cooperate with us will know that our Desheng company has been adhering to the "letter" word and has gone through 15 years of ups and downs.

Carbomer has strong hygroscopicity and weak acidity (weaker than acetic acid). It can be neutralized by alkaline substances, forming high transparent gel, and high viscosity and viscosity increasing effect. Only a very low dosage is needed to produce high effective thickening without being affected by temperature, and can make some insoluble additives (particles, oil drops, etc.) permanently suspended. So it can be made into various kinds of gelatin in daily chemicals and skin care products, as well as pharmaceutical gels, such as Carbomer Eye Drops, Carbomer gynecological gel, etc.   Carbomer 940 and carbomer 980 are the most widely used. According to the characteristics of different products, there are many other models. What are the total models of carbomer? In fact, according to the relatively large series, Carbomer can be divided into two categories: carbomer 900 series and carbomer 1300 series. CP products of different types and uses can be obtained by controlling the relative molecular weight and crosslinking degree of polymers. The characteristics and applications of some or several different carbomer models are introduced below.     1. The characteristics of carbomer 934, Carbomer 934p and carbomer 974P: good thickening effect, strong shear resistance, permanent stability at high viscosity and short flow in aqueous solution, which are very suitable for cream cosmetics. Among them, 934p 974P is more suitable for pharmaceutical preparations because of the small amount of residual solvent or non-toxic solvent.   2, the characteristics of carbomer 940 and carbomer 980: in this two, Carbomer is relatively more used in daily chemical products. Because of its highly effective thickening effect, it produces clear and transparent water or alcohol water gel, and its rheological property is very short. It is very suitable for all kinds of advanced cosmetics and hand sanitizer gel.   3, CP934P, CP971P, CP974P (P represents the Pharmacopoeia level) can release the drugs in zero or near zero mode. They have the characteristics of rapid and effective gelation, and have good controlled release at very low concentrations, so they are often used as accessories for oral preparations.   After reading the above introduction, we know that carbomer has such a variety of models, and there are some differences in application. At present, Desheng mainly produces two kinds of carbomer 980 and 940, which have high transparency, fluffy powder and white color. The viscosity can be adjusted according to the buyer's requirements. The products have detailed test reports on various parameters, and customers can purchase according to their requirements Sheng has been increasing investment in R & D and production. Now the daily output can reach 3-5 tons, and the supply is sufficient. At present, the activity price of ton level is 130 yuan / kg. Customers can take advantage of the preferential activities to stock up in advance.

Anticoagulants are chemical agents or substances that can prevent blood coagulation. Commonly used anticoagulants are heparin, EDTA, citrate, oxalate and so on. Although we need to choose the appropriate anticoagulant according to different requirements in practical application, their basic performance is still the same as that of blood coagulation. Therefore, we need to know several points in the process of use:   1、 After taking blood with anticoagulant blood collection, how to place it and how long can it be placed   We in the Department of Hematology, laboratory commonly used to anticoagulant tube, anticoagulant tube, as the name implies, is to add anticoagulant blood collection, it is mainly used to save blood, prevent blood coagulation. Generally speaking, how long the anticoagulant tube can keep blood is mainly determined by the anticoagulant substances in the anticoagulant tube. Anticoagulant substances mainly include heparin and liquid.   In addition, the test items are different, and the storage time is also different. If the blood routine and other morphological examination, in 2 to 8 degrees can be preserved for 7 days, if the biochemical test, generally not more than 12 hours. If it is blood glucose test, the result will be inaccurate after 2 hours without refrigeration and adding other reagents.     2、 Several factors affecting the anticoagulant effect are as follows   (1) Blood flow is not smooth, resulting in coagulation without mixing with anticoagulants.   (2) The amount of anticoagulant is insufficient or ineffective.   (3) Blood samples and anticoagulants were not completely mixed (especially solid anticoagulants, such as blood routine) or forgot to mix due to staff error.   (4) The use time of pressure pulse band is too long, which can accelerate coagulation reaction. It is difficult to find the micro coagulation assembly, which leads to abnormal results, such as the influence of micro agglutination on blood routine test and coagulation series test.   (5) Use anticoagulants correctly. In general, serum is often used as sample in clinical test, and anticoagulant is not required. However, when anticoagulant is required for some special test items, attention should be paid to the selection of appropriate anticoagulant and the ratio of anticoagulant to blood. To prevent the change of red blood cell morphology.   In particular, anticoagulants containing K and Na salts cannot be used for the determination of K +, Na +, and those containing EDTA and oxalate cannot be used for the determination of Ca + +, because Ca + + can form insoluble substances with them. Oxalate and fluoride can not be used to determine enzymes and samples determined by enzymatic method, because they can activate or inhibit some enzyme activities. For example, oxalate can inhibit the activities of amylase, acid phosphatase and lactate dehydrogenase. Fluoride can activate urease and amylase.   Desheng is an old brand manufacturer of blood vessel additives. It has formed independent intellectual property rights and professional production and research ability in the aspect of blood collection additives. It has provided products and raw material solutions for more than 100 domestic and foreign manufacturers. The anticoagulant products of blood samples include heparin sodium, heparin lithium, trisodium citrate, EDTA dipotassium, EDTA potassium, potassium oxalate, etc.; the blood sample anticoagulant series products include blood coagulant powder, blood coagulant, etc.; the materials used for blood sample pretreatment include separation gel, silicification agent, etc.

Hubei xindesheng, founded in 2017, is a new technology-based enterprise established on the basis of Wuhan Desheng Biochemical Technology Co., Ltd. (2005). It is specialized in the R & D, production and sales of blood collection additives and blood test reagents. It has perfect equipment and R & D team, including blood collection additive, chemical photo reagent, biological buffer, enzyme preparation, new Trinder's reagent, antigen antibody and other products. In addition, it has formed independent intellectual property rights and professional production and research ability in the aspect of blood collection additives. We have accumulated rich knowledge and experience in blood sample pretreatment and have professional technical service advantages.   At present, the company mainly includes: Blood collection additives: serum separation gel, heparin sodium, heparin lithium, EDTA potassium, EDTA potassium, coagulant, silicification agent, sodium citrate, potassium oxalate, etc;   Chromogen substrate (New Trinder's reagent): toos, tops, ADOS, ADPS, Alps, Daos, hdaos, MADB, Maos, etc; Biological buffers: Tris, Tris HCl, bicine, caps, mops, taps, EPPs, HEPES, PEP, pipes, etc   Luminescent reagents: acridine ester dmae-nhs, acridine ester nsp-dmae-nhs, acridine salt nsp-sa, acridine salt nsp-sa-nhs, acridine hydrazide nsp-sa-adh, acridine ester me-dmae-nhs, luminol, isoluminol, etc   Viral transport medium and carbomer series products specially launched for covid-19;   As a manufacturer, many products can be customized according to the needs of customers. In addition to product quality assurance, we also have advantages in price and after-sales service. No matter at home or abroad, we have maintained a good reputation, including a lot of domestic and foreign famous companies cooperating with us.