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Platelet Function Screen

Performing Lab(s)

Memorial-Belleville & Memorial-Shiloh

Specimen Requirement (s)

Specimen:  whole blood

Type: Container/Tube:  Two (2) blue (sodium citrate) tubes

Specimen Volume: full tube

Specimen Minimum Volume:  full tube

 

Collection Instructions:

  • Outpatients specimens must be drawn at either the Belleville or Shiloh OP laboratories - this test cannot be drawn at MOB or out-reach site.
  • Hand deliver to lab. 
  • Do not tube. 
  • Must be received in lab in less than 4 hours from collection.

Lab instructions: NA

Unacceptable Conditions

  • Specimen shipped via the pnuematic tube system.
  • Specimen recieved > 4 hours old.
  • Specimens received clotted.

Day(s)/Shift(s) Test Set Up and Turnaround Time

Sunday through Saturday

Hours: 24 hours

 

Turnaround Time:

STAT: No

Routine: less than 8 hours from receipt.

Transport and Stability

Transport temperature: Ambient to lab

Reference Values

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

CPT/LOINC Codes

85576 × 2

Interpretive Data

This test determines platelet function. 

  • If it is within normal range the patient platelet functionality is considered to be normal.
  • If the COL/EPI is elevated a second test (COL/ADP)is automatically done.
  • If the COL/ADP is normal, the elevation of the COL/EPI is due to medication (aspirin).
  • If the COL/ADP is elevated, a true platelet dysfunction may be the cause.