Troponin T
Troponin T is a protein released into the blood when heart muscle cells are damaged. It is used alongside troponin I to diagnose heart attacks.
Category: Cardiac Markers
Also known as: troponin t, tnnt, tnt, cardiac troponin t, ctnt, hs-tnt
Reference range: 0–0.01 ng/mL (Source: ABIM)
Standard unit: ng/mL
High values may indicate
High troponin T levels may indicate heart attack (myocardial infarction), myocarditis, heart failure, pulmonary embolism, or sepsis-related cardiac damage.
Low values may indicate
Low or undetectable troponin T levels are normal and indicate no significant heart muscle injury.
Frequently asked questions
- What is a normal Troponin T level?
- A typical reference range for Troponin T is 0–0.01 ng/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Troponin T measured in?
- Troponin T is most commonly reported in ng/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Troponin T reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Troponin T over time?
- Yes. Upload results from any lab and BloodId charts your Troponin T over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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