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Blue Top (Citrate Tube)
Lavender top (EDTA Tube)
Specimen Requirements
Preferred:
Container/Tube: Blue Top (Citrate Tube) and Lavender top (EDTA Tube)
Minimum Volume: 2 Full (2.7 mL) Blue top and Full (4.0 mL) EDTA
Specimen Stability
Ambient:4 hours
DO NOT REFRIGERATE
Reference Range
COL/EPI 71 – 92 sec
COL/ADP 55 – 115 sec
Methodology
The PFA-100® is an instrument and test cartridge system in which the process of platelet adhesion and aggregation is simulated in vitro mimicking injured endothelium. The time necessary to block a membrane coated with collagen and epinephrine or collagen and ADP is measured and called closure time.
CPT
85576 (x2)
Lab Handling
Specimen should NOT be placed on a rocker or rotator while awaiting testing