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Mayo Clinic Laboratories

Test Code TROP High-sensitivity Troponin T

Additional Codes

LAB139

Aliases

TnT, Troponin T 5th Generation

Collection Method

Venous collection

Minimum Volume

0.5ml

Container

Lt Green / Plasma Separator / Lithium Heparin

Acceptable Specimens

Plasma:

  • Light Geen Top (lithium heparin)

Reference or Target Ranges

Age Male Female
All ages <22 <14

 

Reportable Units

ng/L

Critical Value

≥23ng/L for males

≥15ng/L for females

Reasons for Rejection

Hemolysis Threshold 100 mg/dL
Icterus Threshold 27 mg/dL
Lipemia Threshold 1500 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

Ambient 8 hours
Refrigerated (4°C to 8°C) 24 hours
Frozen(-40°C to 0°C) 12 months

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench CPH Chemistry
Methodology/Method Description Roche Cobas 

CPT Codes

84484

Last review/edit date

2025