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Protime -Whole Blood, Point of Care
MessagePerforming Lab: HP Clinics: AD, AN, ER, MH, NRC, PC, SS, Lakeview, Westfields
Test Code
3609
Alias/See Also
Sunquest: PTQ
CPT Codes
85610
Includes
Protime (whole blood), INR (whole blood)
Preferred Specimen
Fresh whole blood (venous or capillary) collected in a capillary tube, plastic syringe or free flowing finger-stick without anticoagulant.
HP Clinics: Free flowing fingerstick, only
HP Clinics: Free flowing fingerstick, only
Minimum Volume
0.1 mL
Instructions
HP Clinics: AD, AN, ER, MH, NRC, PC, SS order only
Lakeview, Westfields Hospital order only
Point of Care
Lakeview, Westfields Hospital order only
Point of Care
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Avoid strong repetitive pressure ('milking') as it may cause hemolysis or tissue fluid contamination of the specimen.
Methodology
i-STAT cartridge
HP Clinics: CoaguChek XS+
Setup Schedule
Point of Care - Bedside testing
Limitations
Poor technique in sample collection may compromise results. INR testing is not reccomended for patients being given Cubicin (daptomycin for injection).
Reference Range
10.6 - 13.4 seconds
Clinical Significance
The INR is a whole blood determination used for the monitoring of oral anti-coagulation therapy such as Coumadin (warfarin).
