Lupus Anticoagulant and Antiphospholipid Confirmation (on Coumadin®) with Consultation
Test code
CPT code(s)*
Test resources
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Details
Includes
Prothrombin Time with INR
Thrombin Clotting Time
Cardiolipin Antibodies (IgG, IgM)
Beta-2-Glycoprotein I Antibodies (IgG, IgM)
Hexagonal Phase Confirmation
dRVVT Screen with Reflex to dRVVT Confirm and dRVVT 1:1 Mix
Coagulation Consultation
If dRVVT Screen is prolonged (>45 seconds), then dRVVT Confirm will be performed at an additional charge (CPT code(s): 85597).
If dRVVT Confirm is positive, then dRVVT 1:1 Mixing Study will be performed at an additional charge (CPT code(s): 85613).
Methodology
Clot Detection • Clotting Assay • Immunoassay (IA) • Photo/Optical
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1 mL frozen platelet-poor plasma collected in each of six 3.2% sodium citrate (light blue-top) tubes |
| Minimum volume | 0.5 mL (x6) |
| Collection instructions | Please submit a separate, frozen vial for each special coagulation assay ordered. Draw blood in a light blue-top tube containing 3.2% sodium citrate, mix gently by inverting 3-4 times. Centrifuge 15 minutes at 1500 g within one hour of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial(s). Freeze immediately and transport on dry ice. |
| Transport container | Transport tube(s) |
| Transport temperature | Frozen |
| Specimen stability | Room temperature: Unacceptable Refrigerated: Unacceptable Frozen: 14 days |
| Reject criteria | Hemolysis • Received room temperature • Received refrigerated |
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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