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Test Code TRTHS Troponin T, High Sensitivity

Performing Laboratory

Hunterdon Medical Center

Useful For

High sensitivity Cardiac Troponin T (cTnT) is useful for monitoring acute coronary syndromes including myocardial infarction and is associated with an improved rule-out process.

Cardiac troponin T is a cardio specific, highly sensitive marker for myocardial damage. Cardiac troponin T increases rapidly after acute marocardial infarction (i.e. it can be detected within one hour if using a high senitivity assay) and may persist for up to for two weeks thereafter.

If clinically indicated repeat troponin 2 hours after initial collection..

 

Note: ED Troponin HS Order Algorithm

  • A serial testing algorithm is available for ED patients only:TRTWD. Troponin-T High Sensitivity with Delta.
  • A second Troponin test is performed and a Delta change from the baseline result is reported.
  • A third serial test may be ordered, if indicated.

Specimen Requirements

 Container/Tube                 
 Preferred   PST (Li Hep) Gel- Mint Green Top  
 Acceptable   Green Top
 Specimen Volume   1.0mL
 Minimum Volume   0.5mL

Specimen Type

Lithium Heparin Plasma

Specimen Transport

Ambient

Specimen Stability

  Temperature   Time Frame  
  Refrigerated 2-8°C     24 hours

Reject Specimen Due To

Gross hemolysis

Day(s) Test Set up

Monday through Sunday

Reference Values

 

  Reference Values   * Note difference in units
  Female   ≤ 14ng/L*
  Male   ≤ 22ng/L*
  Critical Value   >52 ng/L*
  Indeterminate Range   
  Female   15-52 ng/L
  Male   23-52 ng/L
    Troponin is moderately elevated but does not confirm myocardial injury  

Test Algorithm

If clinically indicated repeat troponin  2 hours after initial collection

Methodology

Electrichemiluminescence Immunoassay: ELCIA

CPT Code

84484

Loinc Code

67151-1