1031

Protein C Activity

Order Code: 1031 Get Requisition Form

Test Information

This test provides the activity level of the blood coagulation factor, Protein C. This protein is one of the regulatory proteins in the blood clotting cascade.

Also Known As

PC
Protein C

Test Type

Functional/Serologic Test

Sample Notes

Citrated Plasma (light blue top)

Requested Volume

0.5 ml

Minimum / Pediatric Volume

0.3 ml

Additional Sample Information

Protein C activity is measured by chromogenic method. Patients should be off warfarin for at least 2 weeks before drawing a sample. The assay kit manufacturer has demonstrated the assay to be unaffected by therapeutic levels of unfractionated heparin, low molecular weight heparin, dabigatran and rivaroxaban, but aprotinin may cause falsely reduced protein C activity results. Pathologic samples that have undergone contact activation may result in falsely elevated protein C activity. Age-dependent reference intervals are used.