Know Your Blood Parameters: Troponin I (cTnI)

1. Parameter Name

   Troponin I (cTnI)
   

2. Test Type

   Blood
   

3. Normal Range

   < 0.04 ng/mL (varies by assay)
   

4. High Levels Indicate

   Heart muscle injury such as myocardial infarction (heart attack), myocarditis, or severe cardiac stress.
   

5. Low Levels Indicate

   Normal heart muscle integrity; low or undetectable is expected in healthy individuals.
   

6. Why It's Tested

   To diagnose acute coronary syndrome and assess heart muscle damage.
   

7. Associated Symptoms (if abnormal)

   Chest pain, shortness of breath, sweating, nausea.
   

8. What To Do If Abnormal

   Immediate medical evaluation; ECG, further cardiac imaging, and hospital admission may be necessary.
   

9. Common Conditions Related

   Myocardial infarction, myocarditis, heart failure.
   

10. Nutrition or Lifestyle Connection

    Heart-healthy diet, avoid smoking, manage blood pressure and cholesterol.
    

11. References (APA Format)

    Thygesen, K., et al. (2018). Fourth universal definition of myocardial infarction. Circulation, 138(20), e618-e651.

    MedlinePlus. (2023). Troponin test.https://medlineplus.gov/lab-tests/troponin-test