Sample type: Plasma

Test name: Anti-Xa a.k.a. Low Molecular Weight Heparin Monitoring, UFH monitoring

Condition / Indication: To quantitatively measure the amount of FXa inhibition by unfractionated heparin (UFH), low molecular weight heparin (LMWH), or direct oral anticoagulants.

Special precautions & notes: Cannot use underfilled, overfilled, clotted, contaminated or samples aged (>24 hours).

Reference range: [UFH] Therapeutic range 0.3–0.7 IU/mL. [LMWH] Therapeutic 0.8 – 1.6 IU/ml (od dosing); 0.5 - 1.1 IU/mL (bd dosing); Prophylaxis 0.1 - 0.4 IU/mL

Container: Citrate (Blue top)

Ideal volume (mL): 2.7 mL

Discipline: Haematology

Turnaround time: 4 hours for UFH, 24 hours for all other tests. If result is required more urgently than 24 hours, please contact haematology laboratory and testing will be expedited if possible.