1. Plain (no additive, serum) tube,red cap;
2. Clot activator (Pro-coagulation) tube,orange cap;
3. Gel clot activator tube, yellow cap;
4. Glucose (sodium fluoride, oxalate) tube, grey cap;
5. Sodium Citrate tube (1:9), blue cap;
6. Sodium (Lithium)Heparin tube,green cap;
7. EDTA K2 (K3, Na2) tube, purple cap;
8. ESR tube, Sodium Citrate (1:4), black cap.