Plasminogen activator inhibitor (PAI)
Last updated: Saturday, 20, March, 2004
This assay is rarely performed and only in specialised laboratories.
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4.5 mL blood added to 0.5 mL citrate.
| Reference Interval|
Functional assay: 0-3.5 U/mL
Rarely performed. Investigation of recurrent thrombotic episodes.
PAI is an inhibitor of the fibrinolytic system.
Elevated levels may be found in acute myocardial infarction, malignancy, pre-eclampsia, infectious disease, and following surgery (trauma).
Dacie JV and Lewis SM. Practical Haematology. 8th ed. Churchill Livingstone 1995.