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Lab Test Dictionary

Plasminogen Activator Inhibitor Antigen, Plasma (PAI1) (Back-Up Only)

Methodology

Enzyme-Linked Immunosorbent Assay (ELISA)

Synonyms

PAI-1 Ag

Specimen Type

Plasma

Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days

Wednesday

Standard TAT

7-12 Days

Collection Information

Specimen Required

(one) 1.8 mL or (one) 2.7 mL Blood

Container Type

Sodium Citrate (Blue-Top) Tube

Processing Information - Lab Use Only

Transport Temperature

Frozen Only

Specimen Stability

Room Temp: 4 Hours; Refrigerated: Unacceptable; Frozen: 2 Years

Rejection Criteria

Gross hemolysis; Gross lipemia; Gross icterus

Test Volume Required

1 mL Plasma

Minimum Test Volume

0.5 mL Plasma

Included Tests

1. Centrifuge, transfer all plasma into a plastic vial, and centrifuge plasma again. 2. Aliquot plasma into a plastic vial leaving 0.25 mL in the bottom of centrifuged vial. 3. Freeze plasma immediately (no longer than 4 hours after collection) at -20 degrees C or ideally, at or below -40 degrees C. Order in Mayolink and send frozen with courier Monday-Friday.

Comments

1. Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results. 2. Each coagulation assay requested should have its own vial.