Test Overview
Method
Chromogenic Assay
Result Included
Rivaroxaban
Aliases/Synonyms
Xarelto
Specimen
Specimen Type
Plasma (Citrate)Volume
Sample Volume
1.0 mL
Minimum Volume
0.5 mL
Collection & Handling
Collection Instructions
Collect specimen 2 – 4 hours post dose (peak).
Handling Information
Separate and freeze immediately. Store and send frozen.
Additional Information
Other anti-Xa anticoagulants (including unfractionated heparin, low molecular weight heparin (enoxaparin, tinzaparin, dalteparin) and fondaparinux) may interfere with the results.
Stability
| Frozen |
|---|
| 28 days |
If the specimen thaws, it is unsuitable for analysis.
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Not frozen |
Performance & Interpretation
Turnaround Time
8 days
Results
Name
Units
Reference Range
Conversion
-
Rivaroxabanµg/L20mg daily dose:
Peak: 182 - 408, Trough: 3 - 153
15mg daily dose:
Peak: 180 - 408, Trough: 2 - 161
10mg daily dose:
Peak: 91 - 196, Trough: 1 - 38
The lower limit of detection for this assay is 30 µg/L.
Referral Location
Out-of-Country
Test Version
Last Updated
2019-09-30