Sign in →

Test Code LABLPRTM Liver Prothrombin (PT) Time, Plasma

Additional Codes

Test Name in EPIC EPIC Test Code Mnemonic
LIVER PROTIME LABLPRTM LIVER PROTIM

 

Methodology

Electromechanical Clot Detection/ Calculated International Normalized Ratio (INR)

Note: Neighborhood and regional sites may have a different LIS test number, contact site for specific ordering information.

Specimen Requirements

Fill Blue top tube to the etched line located just below the cap of the tube.
Light-blue top (3.2% sodium citrate) 

Unacceptable specimens: Specimens that are short-draws, over-draws, clotted or hemolyzed may yield incorrect results.

 

Specimen Transport Temperature

1.  To achieve platelet-poor plasma, spin down, remove top 2/3 of plasma, and spin plasma again in a plastic vial.*
2.  Aliquot top 3/4 and place platelet-poor plasma in a plastic transport vial.*
3.  Glass vials are not acceptable for processing/transport/storage.
4.  Stable for 24 hours at room temperature
5.  Preferred specimen volume: 1 mL sodium citrate plasma
6.  Minimum specimen volume: 0.5 mL sodium citrate plasma
 
* 2 Aliquot labels will auto print at non-performing sites to double spin 
 

Day(s) Test Set Up

Monday through Sunday (all shifts)

Performing Laboratory

Coagulation-

East Region: Sandstone Hospital Lab, SMDC Clinical Lab

West Region: Fargo Hospital Lab

Test Classification and CPT Coding

85610

Reference Values

Normal range changes every year with lot change of PT reagent. See patient chart copy for current range.