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Prothrombin Time
0030215
Ordering Recommendation
Initial test for suspected bleeding or clotting disorder.
Mnemonic
PT
Methodology
Electromagnetic Mechanical Clot Detection
Performed
Sun-Sat
Reported
1-2 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Lt. blue (sodium citrate).  
Specimen Preparation
Transfer 1 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Serum. EDTA plasma, clotted or hemolyzed, specimens.  
Remarks
  
Stability
Ambient: 24 hours; Refrigerated: Unacceptable; Frozen: 2 weeks  
Reference Interval
12.0-15.5 seconds  
Interpretive Data
 
Note
Reference intervals established using 3.2% sodium citrate.
CPT Code(s)
85610
Components
Component Test Code*Component Chart NameLOINC
0030220Prothrombin Time5902-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • INR
  • Prothrombin Time, Plasma
  • Protime
  • PT