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Test Code INR (POCT) INR, POCT

Performing Laboratory

 

Memorial Hospital - Outpatient Laboratory            304-388-4190 or 304-388-9377       
Teays Valley Hospital Laboratory    304-757-1770
CAMC LabWorks    304-388-5080

Specimen Requirements

Preferred- Whole Blood Fingerstick First Drop Unclotted Blood

Acceptable- Venous Blood Collected in Plastic Syringe with 23 Gauge Needle or Larger, Discard First 4 Drops from Syringe, then use next drop to apply to strip

One drop minimum

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient
  • Clotted

Reference Values

Normal INR values vary person to person

Please follow up as instructed by your physician

Critical Value: >4.4

Methodology

Electrochemical-Coaguchek reagent strip

Days Test Set Up and Turnaround

Monday-Friday 7:00 AM-5:00 PM

Results available immediately after sampling

CPT Coding

85610

Additional Information

Patients on warfarin (coumadin) should be regulated consistently by either plasma (performed in APL) or by finger stick whole blood (POC). Patient’s prothrombin times should be regulated consistently in the same manner.