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Test Code THR Thrombin Time

Acceptable Collection Tube(s) or Specimen

Blue

Specimen Draw Volume

2.7 mL

Processing Instructions

Draw 2.7 mL in a Blue Top tube. Centrifuge tube and remove plasma, centrifuge plasma again, and place 1 mL of platelet-poor plasma in an aliquot tube and freeze. (Double centrifuged specimens are necessary for accurate results).

Stability

Stability: Plasma: Room temp 24 hrs, Refrigerated 24 hrs, Frozen 4 months. Whole Blood: tubes left capped/unspun are stable for 24 hours at room temperature.

Performed Test Frequency

Everyday

Methodology

Clotting

CPT(s)

85670

Performing Location

MercyOne Des Moines Laboratory, Hematology

Cerner Test Code

THR

Rejection Criteria

Rejection criteria: Room Temp or refrigerated specimen, hemolyzed specimen