- CONTAINERS CONTAINING NO ANTICOAGULANT
- Gold or Tiger Red/Black Top: Clot Activator and gel for serum separation.
- Red Top Plastic Tubes: contain a Clot Activator and used when serum is need.
- Orange or Gray/Yellow Tiger Top: contain thrombin a rapid clot activator for stat serum test.
- CONTAINERS CONTAINING ANTICOAGULANT(S)
- Green Top color contains sodium heparin or lithium heparin. Used for plasma determination in clinical chemistry.
- Light green tiger for plasma determination.
- Purple or Lavender: contain EDTA anticoagulant. Usually used for complete blood count.
- Grey: these tubes contain fluoride and oxalate. Lurid prevent blood from working.
- Light blue: contain a measured amount of citrate and these tubes are used for coagulation assay.
- Pink: similar to purple, these are used for blood banking.
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