AspirinWorks® 11-Dehydrothromboxane B2 (11-dhTXB2) with Creatinine
Test code
CPT code(s)*
Test resources
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Details
Methodology
Calculation (CALC) • Enzymatic • Immunoassay (IA)
Alternative name(s)
11dhTxB2
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 4 mL random preserved urine in BD C&S Urine Vacutainer® (gray-top) tube |
| Alternative specimen(s) | 4 mL random urine collected in a cherry red/yellow-top BD Vacutainer preservative tube and 4 mL random urine collected in a yellow-top plain urine tube |
| Minimum volume | 3 mL |
| Collection instructions | Recommend using BD C&S Vacutainer tube for collection (Quest Supply #141974). If urine is not collected in the preferred or alternative specimen tubes, it must be poured off into these tubes within 4 hours of collection. It is not recommended to test individuals suffering from urinary tract infections, severe liver disease, or end stage renal disease. Limitations: Test results may be affected by the ingestion of alcohol, green tea extract, chocolate, omega-3 fatty acids, ibuprofen, statins, or COX-2 inhibitors. Testing should not be performed on individuals suffering from urinary tract infections, severe liver disease or end stage renal disease. It is not known how treatment with oral anticoagulants, glycoprotein llb/llla inhibitors, clopidogrel, or heparin will affect test results. Additional Information: It is important to interpret the results with regard to patient history and lifestyle, in particular medications and supplements, as well as other risk factors. The test should not be used to measure return of platelet function after discontinuation of aspirin therapy. |
| Transport container | BD C&S Urine Vacutainer (gray-top) tube |
| Transport temperature | Room temperature |
| Specimen stability | BD C&S Vacutainer tube and cherry red (yellow-top) tube Room temperature: 7 days Refrigerated: 14 days Frozen: 90 days Plain (yellow-top) tube Room temperature: 7 days Refrigerated: 14 days Frozen: 6 months |
| Reject criteria | Excessive sediment • Blood • Insoluble materials |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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