What it is
Anti-Xa activity to assess whether the heparin dose needs adjusting. For correct interpretation, blood must be drawn as close as possible to 4 hours after heparin administration.
- Sample
- Citrated plasma
- Laboratory
- Reference Laboratory (may vary depending on the collection point)
- Approximate turnaround
- 3 days
- Shipped frozen
- The sample is frozen after separation (the kit includes the instructions for the clinic).