"Clinical Significance
CBC (H/H, RBC, Indices, WBC, Plt) (REFL) - A complete blood count is used as a screening test
Preferred Specimen(s)
Whole blood from a full EDTA (lavender-top) tube
Minimum Volume
Microtainer: 0.5 mL
1 mL whole blood EDTA (lavender-top) tube
Collection Instructions
Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect lavender-top tube last. Traumatic tap can introduce thromboplastin and trap WBC/platelets.
Transport Container
EDTA (lavender-top) tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 48 hours
Refrigerated: 48 hours (may cause platelet clumping)
Frozen: Unacceptable
Reject Criteria
Hemolysis • Clotted • Received frozen
"Preferred Specimen(s)
0.3 mL serum
Transport Container
Serum Separator Tube (SST®)
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 14 days
Refrigerated: 14 days
Frozen: 30 days
Setup Schedule, Minimum Volume"