Plain Tube

If you want to find No Additive Plain Tube, Plain Blood (Red) Collection Tube is there.

Plain vacutainer is used for blood collection and storage for biochemistry, immunology, serology, and test of various kinds of microelements in a medical inspection. 

The main merit is that serum separates blood cells and fibrin naturally, so its physical-chemical properties are kept nonpolluted. 

The plain vial for blood collection has good compatibility, able to match with many biochemical, immunological, blood, and other analyzers' transmission devices.

Blood is collected and stored in plain blood collection tubes for use in tests for various microelements, immunology, serology, and biochemistry during medical inspection.

Plain tubes (i.e. without any anticoagulant) are also used for chemistry studies after separation of serum:

Liver function tests (total proteins, albumin, aspartate aminotransferase, alanine aminotransferase, bilirubin);

Renal function tests (blood urea nitrogen, creatinine), calcium, lipid profile, electrolytes, hormones, and serum osmolality.