Accurate filling of specimen tube is essential.
Anti-Xa testing needs to be sent to the laboratory in a RED specimen bag.
Anti-Xa levels should be collected 3-4 hours post-dose.
Due to a small specimen viability window, patients for this test should be booked close to the courier runs.
Specimens must be stored at room temperature and transported to Laboratory ASAP. (Maximum delay to testing laboratory must not exceed 1hr)
HSN/SPR labs: Please double spin and freeze plasma and send to Main lab on dry ice.
Please ask the patient what anticoagulants they are on, the current dose, and time of last dose.
Record on request form.