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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Protime/INR
Test CodePT
Alias/See Also
PT
CPT Codes
85610
Preferred Specimen
4.5 ml of whole blood (tube must be filled to the line)
Minimum Volume
1.8 ml of whole blood (tube must be filled to the line)
Instructions
Tube must be filled to blue line
Transport Container
Sodium Citrate (blue top)
Transport Temperature
Room temperature
Specimen Stability
24 hours room temperature (centrifuged or uncentrifuged) capped.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens which are not properly filled do not contain the proper anti-coagulant to blood ratio and are therefore rejected. Hemolyzed and clotted specimens are also unacceptable for testing.
Methodology
Clotting
Setup Schedule
Set up daily.
Report Available
Inpatient turn around time: Routine 2 hour, stat 30 minutes. Outpatient testing received by noon will be reported by 4:30 p.m. Specimens received after noon will be reported by the next morning.
Clinical Significance
PT is the recommeded test for monitoring Coumadin therapy.
