Test Code 0208868 Prothrombin Time (Protime), Plasma
Methodology
Coagulometric (Turbidimetric) Measurement
Performing Laboratory
Alomere Health Hospital Laboratory
Specimen Requirements
Specimen Type: Plasma
Collection Container/Tube: Blue top (3.2% sodium citrate)
Specimen Volume: Tube must be filled completely to the stated draw volume.
Specimen Minimum Volume: 2 mL plasma
Collection Instructions:
1. Fill tube completely to stated draw volume (until vacuum is exhausted).
2. If test is performed >4 hours of collection, double spin and send plasma frozen.
Rejection:
Hemolysis
Lipemia
Specimen Transport Temperature
Within 8 hours: Ambient
>4 Hours: Frozen - double spun
Reference Values
International Normalized Ratio (INR): 0.8-1.1
Critical Value (automatic call back): >5
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
85610