Citrate for APCR plus either extra citrate or EDTA for Factor V Leiden Must be venous or arterial collection, NOT capillary

Medical Notes:

APCR is a screening test for Factor V Leiden Mutation G1691A.

Order Factor V Leiden mutation G1691A genotyping when ordering APCR.

If APCR is abnormal, Factor V Leiden Mutation G1691A genotyping proceeds.

If APCR is normal, Factor V Leiden Mutation G1691A genotyping request is cancelled.

Must arrive in the laboratory within 1 hr collection 

LAB NOTES: 

Add-On Tests - check with Haematology first (see CH-W-148)

Fridays

For urgent testing, ring Haematology laboratory