APC (activated protein C) Resistant Factor V Leiden APCF5
One adequately filled 3.0 mL light blue (sodium citrate) top tube.
**TIME SENSITIVE** For specimens that cannot be shipped to the laboratory to arrive within 4 hours of collection, see Collection and Processing of Coagulation Specimens information (link below).
Draw blood into citrate tube (light blue) filled to the proper level (1 part anticoagulant to 9 parts blood). Invert tube 3-4 times to avoid clotting.
|Stability||Ambient and Refrigerated: 4 hours; Frozen platelet poor plasma: 2 weeks|
Specimens that are clotted, hemolyzed, collected in the wrong tube, less than 90% filled, or exceed the stability limits are not acceptable for testing.
|Notes||APC Resistant Facor V Leiden will be performed on ALL Factor V Leiden requests unless specifically ordered as PCR. Levels of Protein C below 50% may give low Factor V Leiden Assay ratios.|
|Preferred Specimen Collection Device(s)|
See Laboratory Report.