Platelet Function ASA (Verify Now)
Abbrev Code: | ASA | ||
Order Code: | LAB5337 | Order Name: | Platelet Function ASA |
Synonyms: | Aspirin; VerifyNow ASA; Platelet Function ASA; Platelet Function Aspirin | ||
Methodology: | Turbidmetric-based optical detection | ||
CPT Codes: | 85576 x1 | ||
Turnaround Time: | Performed and reported 24 hours/day. | ||
Special Instructions: |
This test requires a special tube be used that can only be filled to one amount for proper testing results. Test must be performed within 4 hours of collection. Specimen must be hand delivered; do not send via Pneumatic Tube System (PTS). This test is intended for patients on anti-platelet medication and is not intended for patients with genetic abnormalities.
Patients who have been treated with glycoprotein IIb/IIIa inhibitors should not be tested until the platelet function has recovered. This time period is approximately 48 hours after discontinuation of eptifibatide and tirofiban, and 14 days after discontinuation of abciximab. Other platelet drugs such as P2Y12 inhibitors (e.g. clopidogrel), NSAIDs, etc. may also affect the results of this assay. |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | Two 2 mL Greiner tubes. |
Minimum\Peds Volume: | One 2 mL Greiner tube. |
Container: | 9 NC Coagulation Sodium Citrate (Greiner tube) |
Collection Instructions: |
Only one test may be assayed per tube. If ordering both ASA and P2Y12, additional specimens are required. NOTE: If drawing an EDTA tube at the same time as sample collection for VerifyNow Aspirin test, fill the EDTA tube last. |
Causes for Rejection: | Specimen that is clotted, hemolyzed, underfilled, overfilled, centrifuged, not tested within 4 hours of collection, sent via PTS, or stored in the refrigerator or freezer prior to testing. |
Processing and Shipping
Specimen Processing: | Whole blood. Do not process. |
Shipping Instructions: | Hand-deliver. Must arrive for testing within 4 hours of collection at room temperature. |
Test Performed at or Referral Lab | Coagulation (Southdale, UMMC East Bank, UMMC/UMMCH-West Bank) |
Interpretive
Reference Range: |
Test performance is affected by hematocrits less than 29% or greater the 56%, and platelet counts less than 92 x 109/L. |
||||||
Therapeutic Range: | Therapeutic Range (for aspirin): Less than 550 ARU | ||||||
Use: | Aids in the detection of platelet inhibition due to aspirin therapy. |
Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
systemlabguide@fairview.org for TestID: 4422"