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Test Code LABTHRTM Thrombin Time, Plasma

Additional Codes

Test Name in EPIC EPIC Test Code Mnemonic
THROMBIN TIME, PLASMA LABTHRTM THRTM

 

Methodology

Electromechanical Clot Detection

Specimen Requirements

Fill Blue top tube to the etched line located just below the cap of the tube.
 Grossly hemolyzed specimen is not acceptable.

Light-blue top (3.2% sodium citrate)

 

 

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.  Preferred specimen volume: 1 mL sodium citrate plasma
5.  Minimum specimen volume: 0.5 mL sodium citrate plasma

* 2 Aliquot labels will auto print at non-performing sites to double spin
 
8 hours at 20 ºC; If on heparin therapy, plasma stable for 2 hours at 20±5°C
1 month at -20 ºC. (Double spun)

Day(s) Test Set Up

Monday through Sunday

 

Performing Laboratory

Coagulation-

SMDC Clinical Lab

Test Classification and CPT Coding

85670

Reference Values

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