The key indicators for judging the quality of serum separation gel
With the rapid development of modern medical testing technology, most of the samples used in immunology, clinical chemistry, serology and other clinical tests need to separate blood to extract serum samples. Serum separation gel is used to extract human blood samples. An isolation layer is formed between the red blood cells and the serum to prevent the exchange of substances between the blood cells and the serum, to ensure the original properties of the blood samples within a certain period of time, and to ensure that the test results are more accurate. There are many manufacturers of serum separation gels on the market. How to judge the quality of serum separation gels has become a problem that everyone is concerned about. Today we will talk about some key indicators for judging the quality of serum separation gel.
serum separation gel
Specific gravity: The specific gravity of serum separation gel should be between the specific gravity of serum (plasma) and blood cells (red blood cells) in order to isolate and form an isolation layer. Usually the specific gravity of whole blood is 1.050~1.060, the specific gravity of red blood cells is 1.080~1.090, and the specific gravity of plasma is 1.025~1.030. The specific gravity of the anti-irradiation serum separation gel developed and produced by Desheng Biochemical is 1.055±0.02, which is between plasma and red blood cells, and can effectively extract serum samples.
Viscosity: The viscosity of serum separation gel is generally between 100,000 and 200,000 poise. This index has a certain influence on the addition of glue and fluidity. It is also an important indicator to measure the quality of serum separation gel.
Thixotropy: Thixotropy is the property of changing at the touch of a button, which can quickly gather to form an isolation zone. This is the key for serum separation gel to form an isolation layer under the action of centrifugal force.
Physiological inertness: Serum separation gel must be physiologically inert. It is a hydrophobic compound. When in direct contact with blood, high-quality serum separation gel will not have any reaction with blood, otherwise it will affect the composition of blood and cause test results. Significant bias, leading to misdiagnosis.
Anti-irradiation performance: Vacuum blood collection tubes are required to be sterile, and are usually irradiated by gamma rays. The performance of serum separation gel should not change significantly after gamma ray irradiation, including specific gravity, thixotropy, viscosity, etc. This is radiation resistance.
Stability: The stability of serum separation gel includes two aspects. First, the physical and chemical properties of the separation gel will not change significantly after long-term storage. The serum separation gel produced by Desheng Biochemical is required to be stable for at least two years. The second is that there will be no reaction between the separation gel and other additives in the blood collection tube, which prevents the effect of the reagent from being affected, thereby affecting the blood test.
This article uses the six key indicators of serum separation gel to teach you to judge the pros and cons of serum separation gel. Desheng Biochemical is one of the earliest well-known manufacturers that developed and produced serum separation gel. At present, the separation gel has been developed to the fourth generation, with stable performance and reliable quality. Separating glue customers, please book in advance.
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