Lab Tube Colors Cheat Sheet
Top Colors: Uses
Examples of Common Labs
Red:
Blood bank, type and cross, or used as a discard tube
Red Marble-top or Gold:
Chemistry, Ca, BUN, creatinine
Light Blue:
Coagulation studies, PT, PTT, INR, fibrinogen
Lavender:
Hematology, CBC, H&H platelet counts
Gray:
Chemistry, blood glucose
Green:
Chemistry ionized Ca