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MedicalVideos.com — Lab Values
Heart (Cardiac) Markers reference sheet. Typical adult ranges; ranges vary by laboratory — always compare a result with the range on the patient’s own report.
Heart (Cardiac) Markers reference sheet. Typical adult ranges; ranges vary by laboratory — always compare a result with the range on the patient’s own report.
Heart (Cardiac) Markers — Reference Ranges
Cardiac markers are blood tests used when heart muscle may be under strain or injured. Troponin is the marker most specific to heart muscle; BNP and NT-proBNP reflect stretching of the heart walls and are closely tied to kidney function as well.
This page lists all 8 tests in this group with their typical adult ranges in both unit systems. Open any test for plain-language notes on high and low results and how to prepare.
| Test | Abbr. | Typical range (conventional) | Typical range (SI) |
|---|---|---|---|
| B-Type Natriuretic Peptide | BNP | <100 pg/mL | <29 pmol/L |
| CK-MB | — | <5 ng/mL | <5 ng/mL |
| Creatine Kinase, Total | CK | Male 39–308; Female 26–192 U/L | Male 39–308; Female 26–192 U/L |
| Homocysteine | — | 5–15 µmol/L | 5–15 µmol/L |
| Myoglobin | — | Male 28–72; Female 25–58 ng/mL | Male 28–72; Female 25–58 ng/mL |
| NT-proBNP | — | <125 pg/mL | <15 pmol/L |
| Troponin I | cTnI | ≤0.04 ng/mL | ≤40 ng/L |
| Troponin T | cTnT | ≤0.01 ng/mL | ≤10 ng/L |
Full, always-updated version of this sheet: https://www.medicalvideos.com/lab-values/panel/cardiac/Printed from MedicalVideos.com Lab Values. Educational reference only — not medical advice.
Please note: Reference ranges vary between laboratories, and between the methods and instruments they use — the range printed on your own report is the one your result should be compared with. A result outside the range is not by itself a diagnosis, and a result inside it does not rule out illness. These pages are an educational summary, not medical advice: always discuss your results with the clinician who ordered them, who can interpret them in the context of your health and history.