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Test Code PTT Partial Thromboplastin Time

Cerner Test Code

PTT

Acceptable Collection Tube(s) or Specimen

Blue

Specimen Draw Volume

2.7 mL

Processing Instructions

Draw 2.7 ml in a Blue Top tube. Tube must be filled appropriately to the fill line to ensure accurate results. Centrifuge, aliquot and freeze.

Stability

Stability: Plasma: Frozen 3 months.

Performed Test Frequency

Everyday

CPT(s)

85730

Methodology

Clotting

Performing Location

MercyOne Des Moines Laboratory, Hematology

Rejection Criteria

Rejection criteria: Refrigerated plasma, underfilled blue top, unfrozen >4 hours.