<Ul> <Li> Gold or "tiger" red / black top: clot activator and gel for serum separation </Li> <Li> Red top (plastic, not glass): clot activator but no serum separation gel </Li> <Li> Orange or grey / yellow "tiger" Top: thrombin, a rapid clot activator, for stat serum testing </Li> </Ul> <Li> Gold or "tiger" red / black top: clot activator and gel for serum separation </Li> <Li> Red top (plastic, not glass): clot activator but no serum separation gel </Li> <Li> Orange or grey / yellow "tiger" Top: thrombin, a rapid clot activator, for stat serum testing </Li>

What do the different colors of blood tubes mean