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Vanderbilt Pathology Laboratory Services

Test Directory



PLATELET FUNCTION SCREEN (PFA-100) (PFS)

Department: Coagulation
Test Synonym(s): PFS
CPT Codes: 85576
Methodology: Aperture closure
Reference Range: Collagen/ADP: 62-100 seconds Collagen/Epinephrine: 82 - 150 seconds
Tube Type: Light blue top (Sodium Citrate) - 2 tubes required. Samples must be hand delivered. Samples received via the pneumatic transport tube will be rejected.
Specimen: Citrated whole blood
Alternate Specimen: None
Pediatric Requirements: 2.7 mL (2 tubes required)
Volume: 5.0 mL whole blood
Minimum Volume: 5.0 mL whole blood
Temperature: Room Temperature
Stability: Room temperature: 4 hours
Reasons for Rejection: Clotted sample, incorrectly filled tube, sample transported to lab via pneumatic tube system, sample arriving into the lab after 4:00 PM, sample >4 hours old, sample refrigerated or sent on ice.
Days Performed: Daily
Times Performed: Continuous
TAT: 4 hours
Special Instructions: No ice. Deliver to lab immediately - tube must be full and not clotted. Sample can not be sent via pneumatic tube. Sample must be hand delivered. Do not expose samples to cold temperatures. Click here to print the requisition.

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