The raw materials of serum separation gel are polyester or polypropylene. Serum separation gel is a viscous fluid, and its structure contains a large number of hydrogen bonds. Due to the association effect of hydrogen bonds, a network structure is formed. Under the action of centrifugal force, the network structure is destroyed and it becomes a fluid with low viscosity. Serum separation gel was initially used to separate serum from blood clots. However, with the development of medicine, serum separation gel is far more than just this most basic function now. According to different specific gravities, viscosities, appearances, etc., it is used in many fields such as skin grafting, treatment, dentistry, cosmetic surgery, and dermatology.

The serum separation gel and blood clotting accelerant  were independently developed and produced by Improve Medical Technology (Nanxiong) Co., Ltd, which are of stable quality and reasonable price. 
The IMPROVE MEDICAL vacuum blood collection tubes added these two components as additives have passed strict clinical verification and succesfully obtained FDA registration in the United States, this fully proves that they have no impact on test results.