PROTHROMBIN TIME/PROTIME (PT)

PROTHROMBIN TIME/PROTIME (PT)

LABORATORY SECTION:

  • Clinical Hematology (Coagulation)

METHODOLOGY:

  • Fibrine polymerization

PURPOSE:

  • Used to assess and evaluate diseases affecting clotting factors
  • Used to monitor warfarin therapy

PATIENT PREPARATION:

  • No patient preparation needed

TYPE OF SPECIMEN:

  • 1.8mL Citrated Plasma

REJECTION OF SPECIMEN:

  • Clotted specimen
  • QNS (Quantity not sufficient)
  • Hemolyzed specimen
  • Improperly labeled tube

 

RUNNING DAY:

  • Everyday

SPECIMEN STABILITY:

  • ROOM TEMPERATURE (20-24°C)

 

  • REFRIGERATED TEMPERATURE (2-8°C)

 

  • 24 hours

 

  • Not acceptable

RELEASING OF RESULTS:

  • 1 hour after blood extraction