Cardiac Markers

Troponin I (cTnI) is a protein measured in blood that is associated with heart muscle cell injury. On a lab report, cTnI helps describe whether cardiac proteins are present at low or high levels and how results compare with the Troponin I normal range. It is commonly reviewed with other cardiac panel markers to understand the broader pattern in a cTnI test result.

Troponin T (cTnT) is a protein marker measured in blood tests and sometimes listed on a lab report to show how much troponin T is circulating. It is commonly used in cardiac testing and can help describe patterns related to heart muscle strain or injury. The cTnT result is usually interpreted together with other test values and the testing method used.

NT-proBNP is a blood marker measured in NT-proBNP on a blood test and on a lab report to help describe strain on the heart muscle. It is often used in cardiac panels and is reported with a numeric value and unit, so changes over time can be compared with the NT-proBNP normal range.

B-Type Natriuretic Peptide (BNP) is a blood marker measured as BNP on a lab report or BNP on a blood test. It is a peptide released into the bloodstream and is used to summarize how much BNP is circulating at the time of testing. The BNP test is often reviewed with other cardiac panel values to give a broader picture of blood chemistry and lab reporting context.

Creatine Kinase (CK) is an enzyme measured in blood that helps show how much CK is circulating at the time of testing. On a lab report or blood test, it is often reviewed as part of a cardiac panel and compared with other markers for a broader lab picture. The CK test is reported in units per liter and can vary with muscle activity, hydration, and other everyday factors.

Creatine Kinase-MB (CK-MB) is a blood marker measured on a CK-MB test and sometimes reported on a cardiac panel. It reflects the amount of the CK-MB enzyme in the blood, which can rise or fall based on muscle cell activity and sample handling. On a lab report, CK-MB is read alongside other markers to describe how the sample compares with a normal Creatine Kinase-MB reference range.

Homocysteine is a sulfur-containing amino acid measured in blood. Homocysteine on a lab report helps show how the body is handling methylation and nutrient-related pathways, especially folate, vitamin B12, and vitamin B6 status. It is often included in cardiac-focused testing as one piece of a broader blood test picture.

Myoglobin is a protein measured in blood that normally stays inside muscle cells and can appear in the bloodstream when muscle tissue releases it. On a lab report, Myoglobin helps describe how much of this protein is circulating and is often reviewed as part of a cardiac panel. A Myoglobin test result is interpreted with the Myoglobin reference range, which can vary by lab and method.

Lipoprotein-Associated Phospholipase A2 (Lp-PLA2) is a lab value that reflects the amount or activity of an enzyme carried with lipoproteins in blood. On a blood test, Lp-PLA2 is used as a marker in some cardiac panels, where the Lipoprotein-Associated Phospholipase A2 test result helps describe lipid-related blood chemistry.