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PT (PROTHROMBIN TIME)

Test Number:
  • 114
Test Alias:
  • PT/INR
Preferred Specimen:
  • WHOLE BLOOD
Container Type:
  • UNOPENED LIGHT BLUE TOP TUBE (3.2% SODIUM CITRATE)
Alternative Specimen:
Volume:
  • 4.5 ML
Collection Instructions:
  • ALLOW BLOOD TO DRAWN BY VACUUM. A COMPLETELY FILLED LIGHT BLUE TOP TUBE IS REQUIRED TO TEST RESULT ERROR DUE TO DILUTION OF BLOOD WITH EXCESSIVE ANTICOAGULANT. GENTLY INVERT TUBE 4 TIMES IMMEDIATELY AFTER DRAWING.
Transport Temperature:
  • AMBIENT
Specimen Stability:
  • 24 HOURS AT ROOM TEMPERATURE
Methodology:
CPT Code:
  • 85610
Reject Criteria:
  • FROZEN
Reference Range:
Report Available:
  • 1 DAY

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