troponin
noun
tro·po·nin
ˈtrō-pə-nən 
ˈträ-
ˈträ-
-ˌnin
: a protein of muscle that together with tropomyosin forms a regulatory protein complex controlling the interaction of actin and myosin and that when combined with calcium ions permits muscular contraction
Examples of troponin in a Sentence
Recent Examples on the Web
Broken heart syndrome can cause an increase in a cardiac enzyme called troponin, in the blood, that is also elevated by a heart attack.
—
Allison Aubrey, NPR, 17 Feb. 2025
Troponin is more specific and sensitive than CK, as cardiac troponin only increases when there's damage to the heart muscle.
—Jillian Kubala, Health, 31 Dec. 2024
This includes tests that measure hormone levels in the body (such as thyroid and pregnancy tests), vitamin D levels, and heart health (troponin).
—Kirstyn Hill, Pharmd, Mph, Health, 27 Sep. 2024
In an 11-patient study, the therapy showed some reduction in heart disease markers like left ventricle size and troponin levels.
—Meghana Keshavan, STAT, 15 July 2024
If none are available, doctors should be extra wary of the blood panel’s readings, perform multiple tests to confirm low troponin levels, and also reference data from EKGs and other imaging.
—Lizzy Lawrence, STAT, 17 July 2023
The tests inaccurately showed low levels of troponin, a protein that indicates damage to the heart.
—Lizzy Lawrence, STAT, 17 July 2023
Elevated troponin was significantly higher in people who had type 2 diabetes for a longer period of time and whose blood sugar levels were not well-controlled.
—Cathy Cassata, Health, 12 June 2023
The issue caused the test to falsely pick up 30% less troponin than is present.
—Lizzy Lawrence, STAT, 17 July 2023
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Allison Aubrey, NPR, 17 Feb. 2025
Troponin is more specific and sensitive than CK, as cardiac troponin only increases when there's damage to the heart muscle.
—Jillian Kubala, Health, 31 Dec. 2024
This includes tests that measure hormone levels in the body (such as thyroid and pregnancy tests), vitamin D levels, and heart health (troponin).
—Kirstyn Hill, Pharmd, Mph, Health, 27 Sep. 2024
In an 11-patient study, the therapy showed some reduction in heart disease markers like left ventricle size and troponin levels.
—Meghana Keshavan, STAT, 15 July 2024
If none are available, doctors should be extra wary of the blood panel’s readings, perform multiple tests to confirm low troponin levels, and also reference data from EKGs and other imaging.
—Lizzy Lawrence, STAT, 17 July 2023
The tests inaccurately showed low levels of troponin, a protein that indicates damage to the heart.
—Lizzy Lawrence, STAT, 17 July 2023
Elevated troponin was significantly higher in people who had type 2 diabetes for a longer period of time and whose blood sugar levels were not well-controlled.
—Cathy Cassata, Health, 12 June 2023
The issue caused the test to falsely pick up 30% less troponin than is present.
—Lizzy Lawrence, STAT, 17 July 2023
Cite this Entry
“Troponin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/troponin. Accessed 20 Mar. 2025.
Copy CitationMedical Definition
troponin
noun
tro·po·nin
ˈtrōp-ə-nən
ˈträp-
ˈträp-
-ˌnin
: a protein of muscle that together with tropomyosin forms a regulatory protein complex controlling the interaction of actin and myosin and that when combined with calcium ions permits muscular contraction
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