| Description: |
Heparin Level, Unfractionated Heparin. Measurement of the heparin concentration of unfractionated (standard) heparin by anti-Xa activity. This measurement is an alternative to using the PTT to monitor heparin therapy, and may be useful to monitor heparin anticoagulation in patients with a prolonged base line PTT (for example patients with a lupus anticoagulant). |
