Plain Vacuum Blood Collection Tube

The plain vacuum blood collection tubes contain no anticoagulants, coagulants, or separation gels. Its design philosophy is to minimize interference from foreign substances and obtain serum that is closest to the body's physiological state. Therefore, it is often used as the "basic" blood collection tube in laboratories and serves as the gold standard or reference method for many testing items.

Additive-free: No ingredients that affect blood coagulation are coated on the tube walls; after injection, blood clotting naturally relies on its own coagulation mechanism.

Long coagulation time: Without coagulants, complete blood coagulation usually takes 30 to 60 minutes, which cannot meet the rapid needs of emergency testing.

Specimen obtained as serum: after centrifugation, serum (a pale yellow liquid without fibrinogen or other coagulation factors) was obtained, not plasma.

Key points: After blood collection, there is no need to shake the test tube; it should be left standing vertically and waiting to coagulate naturally.

Due to their pure composition, plain vacuum blood collection tubes are mainly used in routine projects that require high detection accuracy and do not urgently require results:

Routine biochemical tests: such as liver function, kidney function, electrolytes, blood sugar indicators, etc.

Immunology and serological tests: such as infectious disease screening (hepatitis B, hepatitis C, syphilis, AIDS, etc.), thyroid function, tumor markers, sex hormones, rheumatic immune-related antibodies, etc.

Blood bank and blood typing: Also used for serological tests related to blood banks