Plain Tube aims to obtain serum specimen for biochemistry, immunology and serology tests in clinical inspection. Its main merit is that serum separate out of blood cells and fibrin naturally, so its physico-chemical properties are keeping nonpolluted. The intact serum is suitable for a wide range of laboratory operation, routine clinical chemistry, immunology and serology.

Gel & Clot Activator Tube aims to obtain high quality serum specimen for biochemistry, immunology and serology tests in clinical inspection. Inside the tube there is some gel present at the bottom, which is a pure substance and is very stable in physico-chemistry properties. Otherwise, the gel can avoid high-temperature decomposition and small molecules precipitation, hence it greatly reduces the risk of testing equipment clogging.