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Test Code PF Scr PLATELET FUNCTION ASSAY (PFA)

Aliasis

Platelet Function Screen

Patient Preparation

No special patient preparation required

Special Collection Instructions

  • Specimen must be collected using a 21 gauge or larger needle
  • DO NOT SEND THE SAMPLE THROUGH THE PNEUMATIC TUBE SYSTEM
  • Do not spin the sample
  • Properly filled 9:1 ratio (blood to anticoagulant); 3.2% NaCitrate tube

Collection Method

Venous collection; properly filled 9:1 ratio (blood to anticoagulant)

Minimum Volume

Whole blood from a properly filled 1.8 mL or 2.7 mL Sodium Citrate blue top

Container

Light Blue Sodium Citrate

Preferred Specimen

2.7 mL Lt Blue (3.2% NaCitrate)

Acceptable Specimen(s)

1.8 mL Lt Blue (3.2% NaCitrate tube)

Reference or Target Ranges

Collagen/EPI:

0-184 seconds

Collagen/ADP:

0-102 seconds

Reportable Units

Seconds

Critical Value

Not defined for this assay

Reasons for Rejection

Other:                

Hemolysis, Short draws, Over draws, Clotted, Improperly labeled, Samples > 4 hours from collection

Specimen Stability

Ambient

4 Hours

Performance Information

Days and Time Performed

24/7

Expected Turn Around Time

Stat: 1 Hour, Routine: 4 Hours

Stat Availability

Yes

Performing Bench

CRMC Hematology

Methodology/Method Description

PFA-1000

Additional Information / Important Notes

The tube should be delivered to the laboratory by hand with a minimum movement.

Methodology/Method Description

PFA-100 – The single use PFA-100 test cartridge consists of a number of integrated parts including a capillary, a sample reservoir and a biochemically active member with a central aperature.

CPT Codes

85576 x2