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Laboratory Test Detail

Last Updated: April 24, 2024 @ 9:13 am

3500

Prothrombin Time

Specimen:Collect:
  • One Blue Top (Na Citrate)
Submit:
  • 1 mL (Min:0.5 mL) Plasma . Submit Frozen. Submit in a Standard Transport Tube.
Special Handling:
  • Whole blood may be submitted ambient if sample reaches lab within 24 hours
Rejection Criteria:
  • Clotted Specimen
  • Collection tube not properly filled
  • Grossly Hemolyzed Samples
  • Refrigerated samples
Stability:Ambient: 8 Hour(s); Refrigerated: Unacceptable; Frozen: 2 Week(s); Incubated: Unacceptable
Methodology:
  • Mechanical Clot Detection
Performed:Mon-Fri
Reported:1-3 Day(s)
CPT Codes:
  • 85610
Interpretive Data:Please see report for interpretive data.
INR Ratio Reference Range:
Normal = 0.8-1.3
Std Dose = 2.0-3.0
High Dose = 2.5-3.5

The INR reference range is valid ONLY for patients stabilized on oral anticoagulants.
Components:
  • 3501 - MEAN PAT. NORMAL
  • 3502 - RATIO: PAT./MEAN
  • 3507 - PT REF RANGE
  • 3508 - PROTIME
  • 3509 - INR
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