Laboratory Test Detail

Last Updated: July 22, 2024 @ 9:13 am


Partial Thromboplastin Time 1:1 Mixing Study

  • One Blue Top (Na Citrate)
  • 1 mL (Min:0.5 mL) Plasma . Submit Frozen. Submit in a Standard Transport Tube.
Rejection Criteria:
  • Clotted Specimen
  • Grossly Hemolyzed Samples
  • Collection tubes not properly filled
    Plasma from patients on heparin therapy
Stability:Ambient: 4 Hour(s); Refrigerated: Unacceptable; Frozen: 2 Week(s); Incubated: Unacceptable
  • Mechanical Clot Detection
Reported:1-3 Day(s)
CPT Codes:
  • 85730
  • 85732
Interpretive Data:Please see report for interpretive data.
Test results from a positive mixing study cannot exclude the presence of anticoagulant inhibitor drugs such as heparin or direct thrombin inhibitors. Thrombin time or heparin Xa inhibition testing is recommended.
  • 3505 - PTT
  • 3561 - NORMAL PTT
  • 3562 - 1:1 PATIENT MIX
  • 5889 - INTERP
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