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Platelet Function Aspirin Test
MessageTest performed at Portsmouth Regional Hospital Laboratory
Drawn at YH only and sent to PRH
Drawn at YH only and sent to PRH
Test Code
PFTA
CPT Codes
85576
Preferred Specimen
Full Blue Vacuette tube
Instructions
Must be drawn with a 21-gauge or larger needle.
Drawn at YH only and sent to PRH
The specimen needs to be in the Portsmouth Regional Hospital Laboratory within 2 hours from the time of draw.
Obtain collection kit from the Laboratory.
Drawn at YH only and sent to PRH
The specimen needs to be in the Portsmouth Regional Hospital Laboratory within 2 hours from the time of draw.
Obtain collection kit from the Laboratory.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
Refrigerated: Unacceptable
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Any tube other than the Blue Vacuette tube.
Hematocrit < 29% or > 56%
Platelet Count < 92.0 K/uL
Specimen not held at room temperature
Hematocrit < 29% or > 56%
Platelet Count < 92.0 K/uL
Specimen not held at room temperature
Methodology
Impedance Aggregometry
Setup Schedule
Daily
Report Available
Next Day
Reference Range
Test results are reported in Aspirin Reaction Units (ARU).
350-549 ARU - therapeutic range for platelet function
550-700 ARU - NON-therapeutic range for platelet function
350-549 ARU - therapeutic range for platelet function
550-700 ARU - NON-therapeutic range for platelet function
Clinical Significance
The test determines whether platelet dysfunction consistent with aspirin has been detected.
