Siny Medical Yellow Top Tube

Serum separator tubes, also known as gel clot activating tubes or SST tubes, are used for clinical chemistry tests requiring serum. SST tubes are sometimes called "yellow top tubes" or "gold top tubes", referring to the yellow or gold stopper. SST blood tubes contain particles that accelerate blood coagulation and a special gel that separates blood cells from serum. Clear serum can then be extracted from the blood sample and used for testing by centrifugation. Separating gel serum tubes are usually used to detect liver function, renal function, myocardial enzymes, and other indicators, and can also be used to detect viral infection, tumor markers, etc Drugs or hormones may diffuse from the serum into the gel and produce droplets with recorded levels, so the serum separation tube should be handled with care when measuring drug or hormone levels. It is thought that the gel in the SST tube is less transparent in appearance and has less effect on serum drug levels.