Required information: the anticoagulant type ( ie. unfractionated Heparin, Clexane, Fragmin, Rivaroxaban, Apixaban or Fondaparinux ) being monitored MUST be indicated on the request.
This information is required to select the correct assay.
|10a, Apixaban level, Clexane level, F10a, Fondaparinux level, Fragmin level, Rivaroxaban level, Unfractionated heparin level|
|10A: Clexane, 10AH:Plasma Heparin, APIX: Apixaban, RIVX: Rivaroxaban, FONX: Fondaparinux|
|Sample haemolysis may make this test unreportable|
Samples found to have clots cannot be tested
Excerise great care in collection and handling of plasma to avoid the release of platelet factor 4 (PF4) which is a potent inhibitor of heparin.
Clexane 3 hr post injection.
Fragmin 3 - 4 hr post injection.
3.5 mL Sodium Citrate tube filled to label marker, mixed by inversion and sent to laboratory immediately.
Do not use 1 ml citrate tubes.
Minimum Adult Volume:
If testing is delayed by more than 4 hours: spin separate and freeze plasma (plasma should be double spun)
Specimen rejection: specimens that are under or over filled , specimens that do not meet identification requirements.
Result Turnaround Time:
Therapeutic range can depend on treatment regime and be influenced by renal function and weight.
Contact the Haematologist / Registrar for advice.
Laboratory Use Only