Heparin Assay (Anti XA / Anti FXA)

For Clexane: PEAK sample should be taken 3-5 hours post injection, TROUGH sample to be taken prior to injection.
Hospital or GP.
*If Urgent Colchester Request*: 2 x 3.0ml Green Citrate.
*If Urgent Colchester Request*: Colchester.
Non-fasting. No specific patient preparation required.