The vacuum blood collection vessel does not contain anticoagulant, also known as biochemical tube. The inner wall of the blood collection vessel is evenly coated with agents to prevent wall hanging, which is mainly used for blood biochemistry. It is divided into ordinary serum tube and rapid serum tube. The label will indicate whether there is a coagulant, or use red and orange to distinguish the two. The role of coagulant is to accelerate blood coagulation. If you want to coagulation results quickly, you can use a coagulation promoting tube.

Sample type: Serum

Uses: bacteria, tumor, gonad, immune routine, immunization, rheumatoid antibody, diabetic nephropathy detection, blood three items, ICA (insulin cell antibody), GAD (glutamic acid decarboxylase antibody), ABAP (bone type alkaline phosphatase), prostaglandin (T-PSA-F-PSA), HBV-DNA, ferritin, condensation set, procalcitonin PCT, mycoplasma antibody, gastrin, ANCA, Blood cytomegalovirus antibody, human epididymal epithelial secretory protein, serum protein electrophoresis, RA five items, tb-ad tuberculosis antibody.

Heparin is added into the vacuum blood collection vessel. Heparin directly has the effect of antithrombin, which can prolong the coagulation time of the specimen. Excessive heparin will cause leukocyte aggregation and cannot be used for leukocyte counting. Because it can make the background of blood slice dyed light blue, it is not suitable for leukocyte classification.

Sample type: whole blood, plasma

Uses: erythrocyte fragility test, blood gas analysis, hematocrit test, ESR and universal biochemical determination.

Heparin lithium or heparin sodium and gel are used in vacuum blood collection. Heparin is a kind of mucopolysaccharide containing sulfuric acid group. It has a strong negative charge. It has the effect of strengthening thrombin 3 inactivation of serine protease, thereby preventing thrombin formation and preventing platelet aggregation and other anticoagulant effects. Under normal circumstances, 15IU heparin is anticoagulant 1ml blood. Heparin tubes are generally used for emergency biochemical and hemorheological tests.

Sample type: plasma

Uses: TNT, epsilomycin, B27, blood ammonia, BNP (type B natriuretic peptide)

Contains heparin sodium, EDTA Na2, EDTA K2, coagulant (plastic tube, serum) and no coagulant (glass tube, serum) additives. When detecting sodium ions in blood samples, heparin sodium cannot be used to avoid affecting the test results.

Purpose: trace element, toxicology and nutritional chemistry test

It contains EDTA anticoagulant. Compared with other anticoagulants, EDTA anticoagulant has little impact on the agglutination of blood cells and the morphology of blood cells. Therefore, EDTA salt (2k, 3k, 2Na) is usually used as anticoagulant. EDTA salt can combine with calcium ions in blood to form chelates, so as to prevent blood coagulation.

Sample type: whole blood, plasma

Purpose:

2ml: blood routine, reticulocyte, glycosylated hemoglobin (HBAIC), TC blood group, BNP (Boshi)

5ml: pituitary, parathyroid hormone, renin, adrenal function, adrenocortical function, atch + COR, cortisol (COR), blood group + D antigen (combined blood)

It is not applicable to coagulation test and platelet function test, nor to the determination of calcium ion, potassium ion, sodium ion, iron ion, alkaline phosphatase, creatine kinase and leucine aminopeptidase and PCR test.