As a screening test to evaluate overall health; detect and/or identify a wide range of hematologic disorders; assist in managing medications/chemotherapeutic decisions
Assessments of stained smears are performed if results meet specific numeric and/or instrument flagging criteria. Smear review includes assessment of WBC cell populations, presence of WBC and/or RBC inclusions, RBC morphology, and platelet evaluation.
Fill tube to capacity. 0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity.)
Lavender-top (EDTA) tube
Maintain specimen at room temperature.
Hemolysis; clotted specimen; specimen drawn in any anticoagulant other than EDTA; specimen diluted or contaminated with IV fluid; tube not filled with minimum volume; improper labeling; transfer tubes with whole blood; specimen received with plasma removed (plasma is used for other testing