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Test Code Lab318 Platelet Function Screen

Methodology

Platelet Adhesion to Biochemically Active Membranes

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Specimen Requirements

Specimen Type: Whole blood

Container/Tube: Light-blue top (citrate)

Specimen Volume: Full tube

Specimen Minimum Volume: Full tube

Collection Instructions: 

  1. Draw a discard blue top tube prior to drawing a light-blue top (citrated) tube if using a Winged Infusion Set.  Discard tube should be under filled and discarded.
  2. Clotted blood or an insufficient specimen is not acceptable.
  3. Avoid phlebotomy techniques which cause hemolysis and heparin contamination.
  4. Follow nursing policy on volume of blood to discard prior to collecting blood from indwelling heparinized catheters.
  5. DO NOT send tube through the pneumatic tube station.

Analyte Stability:

4 hours at 18° C to 24° C.

Specimen Transport Temperature

Ambient/Refrigerate NO/Frozen NO

Reference Values

Collagen/Epinephrine: 60-160 seconds
Collagen/ADP: 50-110 seconds

An interpretive comment will be provided.
Literature References:

1. Instrument manual: PFA-100 Platelet function analyzer. Dade Behring, 2002. 
2. Kundu SK, Heilmann EJ, Sio R, Garcia C. Characterization of an in vitro platelet function analyzer, PFA-100. Clin Appl Thromb Hemost 1996;2:241-9.
3. Stasik J. Newspath: Principles, indication and limitations of the platelet function analyzer. 08/2006.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2-4 hours after receipt in laboratory

Test Classification and CPT Coding

85576 x 2

Additional Information

For BJH Laboratory Use Only

Analyte Stability:

4 hours at ambient temperature

Laboratory Processing Instructions:

Test is performed in BJH Core Lab. Do not refrigerate or centrifuge specimen. Specimen arriving via pneumatic tube system is not suitable for testing.

LOINC Code Information

Name LOINC Code
Platelet Function 49010-2
Platelet Function Interpretation 49836-0