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Prothrombin Time w/ INR

Test Code
PT


CPT Codes
85610

Includes
  1. Prothrombin Time
  2. INR


Preferred Specimen
Sodium Citrate (Light Blue) Tube


Minimum Volume
1 mL


Instructions
Fill Sodium Citrate tube to fill line.


Transport Temperature
Room Temperature


Specimen Stability
Room Temperature: 24 hours
Refrigerated: 24 hours
Frozen: 3 months at -20°C


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, Icterus, Lipemia.
Underfilled tube. 


Reference Range
Prothrombin Time: 9.5 - 12.8 seconds
INR: 0.8 - 1.1


Performing Laboratory
This test is performed at the following locations:
  1. MercyOne Siouxland Medical Laboratory
  2. MercyOne Dakota Dunes Medical Laboratory



Last Updated: October 24, 2024


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.