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PROTIME & INR
Number 120
CPT Code 
Alias PROTHROMBIN TIME (PT)
Specimen Container Blue Top Citrate
Specimen Type Plasma Citrate
Turn Around Time 24-48 Hours
Days Performed Monday – Saturday
Reference Range 
Alternate Specimen 
Volume 1 mL Plasma
Stability Ambient 1 Day
Stability Refrigerated 1 Day
Stability Frozen 14 Days
Patient Preparation 
Methodology 

Clot formation/ photometric

Limitations 
Rejection Criteria 
Additional Instructions 

Blue top tube must be filled completely

Performing Laboratory Primex
TagsPT, PROTIME, TIME, PROTHROMBIN, INR, INTERNATIONAL, NORMALIZED, RATIO