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Vanderbilt Pathology Laboratory Services

Test Directory



BUFFY COAT SMEAR BLOOD (BC)

Department: Hematology
Test Synonym(s): BC
Test Components: Buffy Coat Differential
CPT Codes: 85009
Methodology: Wright stain smear
Tube Type: Lavender top (EDTA)
Specimen: Blood
Pediatric Requirements: Lavender top (EDTA) - 2 mL (to fill line), or 2 full lavender top (EDTA)microtainer
Volume: 2 mL
Minimum Volume: 500 uL
Temperature: Room temperature or refrigerated
Stability: Must be received by the lab within 4 hours
Reasons for Rejection: QNS, clotted, specimen age
Days Performed: Daily
Times Performed: Continuous
TAT: 1 day
Special Instructions: Deliver to the lab within 4 hours. This test can be ordered if WBC count is less than 1,000/uL.

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