baby blue
sky blue
red
Green heparin tube
blurple
tiger top chem
Blue top tube which contains citrate.
Light Blue. The additive in these tubes is usually Na+ Citrate and there is a marking on the test tube to indicate the minimum fill. Blood must come at least up to the line or it will not be acceptable.
First
It prevents coagulation by binding calcium ions.
Coagulation time is the test in which venous blood is allowed to clot in a test tube.
time