Test directory: Platelet VerifyNow, PRU

Ordering Code 6208
Test Name Platelet VerifyNow, PRU
Alias P2Y12
Clopidogrel
Prasugrel
Ticagrelor
Plavix
Preferred Specimen Venous Whole Blood
Preferred Container Greiner Bio-One Vacuette 2.0 mL partial fill w/3.2% sodium citrate
Optimum Volume 2 Tubes
Collection Instructions Lab Draw Only
Send STAT
Drawn only at QMC or QMC DLS POB III
Use 21 gauge or larger needle
Use discard tube (Citrate or Plain no activator).
Handling Instructions Do NOT centrifuge specimen
Do NOT refrigerate or freeze
Keep at room temperature.
Transport Requirements Oahu: Ambient
Do not transport by PTS.
Hand delivered only.
No agitation.
Specimen Stability Ambient: 4 Hours
Refrigerated: Not Stable
Frozen: Not Stable
Rejection Criteria Specimen older than stability limits, Frozen, Clotted,
Contaminated, Hemolyzed, Over filled tube, Refrigerated,
Under filled tube
Do NOT accept floor or nurse draws.
Avail. Stat Patients of the testing hospital only
Analytic Time 2 Hours
Methodology Platelet aggregation

Reference range(s)

The reference ranges listed below are valid on this date of May 18, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
P2Y12 Reaction Units ALL 180-376 (off drug) 180-376 (off drug) PRU

Reference ...
Reference Range off drug = 180-376 PRU.
Values less than 180 PRU may be evidence of a P2Y12 inhibitor
effect.
 
Note: Up to 1/3 of patients on antiplatelet medications may
      not receive the expected platelet inhibiting effect.
      Insufficient response to anti-P2Y12 therapy may be due
      to multiple factors, including interfering medications
      (proton-pump inhibitors, exposure to Integrillin or
      Aggrastat within 48 hours, or exposure to ReoPro within
      10 days), genetic variations, co-existent medical
      conditions (diabetes, low hematocrit or low platelet
      count), or non-compliance.
Note1

Note1:


Reference Range off drug = 180-376 PRU.
Values less than 180 PRU may be evidence of a P2Y12 inhibitor
effect.
 
Note: Up to 1/3 of patients on antiplatelet medications may
      not receive the expected platelet inhibiting effect.
      Insufficient response to anti-P2Y12 therapy may be due
      to multiple factors, including interfering medications
      (proton-pump inhibitors, exposure to Integrillin or
      Aggrastat within 48 hours, or exposure to ReoPro within
      10 days), genetic variations, co-existent medical
      conditions (diabetes, low hematocrit or low platelet
      count), or non-compliance..