Prothrombin consumption index
This test is rarely performed.
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%.
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Test rarely used as a measure of platelet factor 3 availability.
An abnormal PCI indicates impaired availability of platelet membrane phospholipid for coagulation.
Chanarin I ed. Laboratory Haematology. 1989. Churchill Livingstone.
Parry DH et al. Br J Haematol. 1980; 44: 323-334.