Allina Health Laboratory a part of Abbott Northwestern Hospital

  



  
    

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Test Name:Protime/INR
Test Number:487
Collect:4.5 mL 3.2% Na Citrate tube - lt blue top
Minimum Volume:2.7 mL 3.2% Na Citrate tube - lt blue top
Alternate Collect:Greiner tubes are not acceptable.
Container:Lt blue top (3.2% Na Citrate) tube
Processing:Submit tube unspun
>24 hr - Spin, separate and freeze plasma
Transport/Stability:Ambient - 24 hrs Freeze
Alternate Names:PT
Prothrombin Time
85610.0
Performing Lab:AHL - Coagulation; W
Days Set Up:Daily
Expected TAT:1 day
Ref. Ranges:Adult:
≤ 1.2 INR
11.8 - 14.2 seconds

Therapeutic (most patients): 2.0 - 3.0
Collection/
Processing Details:
Do not over or underfill the tube, as the ratio of 0.5 mL anticoagulant to 4.5 mL whole blood is critical.

Test must be run within 24 hours of collection. If not spin, separate and * freeze in plastic vial.Basic Coagulation Specimen Processing Instructions.
Method:Clot Based Assay
CPT Codes:85610
Additional Information: Proper Na Citrate Tube Filling
Date Created:11/30/2001
Revised Date:05/20/2019