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LABORATORY TEST DIRECTORY

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Partial Thromboplastin Time

CPT Code(s): 85730
Specimen Required: Patient Preparation:
Collect:Lt. blue (sodium citrate).
Specimen Preparation:Separate plasma from cells ASAP or within 2 hours of collection and freeze. Transfer 1 mL platelet-poor plasma to an RDL Standard Transport Tube.
Storage/Transport Temperature:CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Stability:Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 2 weeks
New York DOH Approval Status: This test is New York DOH approved.
Aliases:
  • Activated Partial Thromboplastin TimeaPTTPartial Thromboplastin TimePartial Thromboplastin Time, ActivatedPTT
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