| Ordering Code | 6209 |
|---|---|
| Test Name | Platelet VerifyNow, Aspirin |
| Alias | VerifyNow Aspirin Aspirin Platelet Function, Aspirin |
| 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 | Clotted, Contaminated, Frozen, Hemolyzed, Over filled tube, Refrigerated, Specimen older than stability limits, 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 April 29, 2024.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Platelet VerifyNow, Aspirin | ALL | ARU | Test ... Note1 |
Note1:
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.
Note: Aspirin Reaction Units (ARU) indicate the amount of
thromboxane A2-mediated activation of GPIIb/IIIa
receptors involved in platelet aggregation. ARU is
calculated as a function of the rate and extent of
platelet aggregation. Expected values are in the
range of 350-700 ARU. The cut-off to determine if
a patient is receiving the therapeutic benefit of
aspirin is 550.
Certain conditions may affect test results, such
as exposure to GPIIb/IIIa inhibitors (48 hours
for Integrillin and 10 days for ReoPro) or improper
sample collection (platelet activation).
VerifyNow Aspirin Test results should always be
interpreted in conjunction with other clinical
and laboratory data available to the clinician.
See report..