Prothrombin consumption index (PCI)
Last updated: Friday, 02, April, 2004
This test is rarely performed.
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Collection by laboratory staff.
Comparison of the ability of serum and plasma to clot added fibrinogen in a test based on prothrombin time.
PCI is the plasma clotting time divided by the serum clotting time x 100%.
| Reference Interval|
Test rarely used as a measure of platelet factor 3 availability.
An abnormal PCI indicates impaired availability of platelet membrane phospholipid (PF3) for coagulation.
Chanarin I ed. Laboratory Haematology. Churchill Livingstone 1989.
Parry DH et al. Br J Haematol 1980; 44: 323-334.