Heart Health
An elevated high-sensitivity troponin level
Ask the doctor
Q. I'm 73-year-old man with heart disease (I had a coronary bypass when I was 45). I pay close attention to my health and exercise regularly. Recently, I went to the emergency room with chest pain. Although my electrocardiogram and, later, a stress echocardiogram showed no problems, my troponin was elevated, ranging from 57 to 63 ng/L on several repeated tests. Should I worry about the elevated troponin? Is there a way to lower this level?
A. Troponins, which are proteins involved in muscle contraction, are found almost exclusively in heart and skeletal muscle cells. During a heart attack, reduced blood flow damages parts of the heart muscle, which then releases troponins into the bloodstream. That's why emergency room physicians routinely check blood troponin levels in people with suspected heart attacks.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.
Sign Me UpAlready a member? Login ».
About the Author

Christopher P. Cannon, MD, Editor in Chief, Harvard Heart Letter; Editorial Advisory Board Member, Harvard Health Publishing
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.