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Myoglobin

Published: July 27, 2026Updated: August 25, 2026

Myoglobin is a protein found in heart and skeletal muscle that helps to store and transport oxygen within muscle cells. It is released into the bloodstream when muscle damage occurs.

Quick summary

Myoglobin is a protein that indicates muscle damage when elevated in the blood.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
ng/mL
Clinical utility
diagnostic
Result kind
quantitative
FDA-cleared
Roche Myoglobin, Abbott Myoglobin, Siemens Myoglobin
interpretation: {"text":"25–72 ng/mL: Myoglobin levels within this range are considered normal.","label":"Normal"}; {"text":"Levels above 72 ng/mL may indicate muscle damage, such as from a heart attack or trauma.","label":"Elevated"}

Myoglobin is a small protein that binds oxygen in muscle cells, providing oxygen to the working muscles. It is found in both cardiac and skeletal muscle tissues.

When muscle tissue is damaged, such as in a heart attack or severe muscle injury, myoglobin is released into the bloodstream. Elevated levels can be detected in blood tests.

Myoglobin levels are used as an early indicator of muscle damage, particularly in the context of acute myocardial infarction (heart attack). However, it is not specific to heart damage and can be elevated in other conditions as well.

Frequently asked questions

What is the normal range for myoglobin?
The normal range for myoglobin is typically 25–72 ng/mL.
What conditions can cause elevated myoglobin levels?
Elevated myoglobin levels can be caused by muscle damage from conditions such as heart attacks, rhabdomyolysis, or severe muscle trauma.
  1. 1
    Myoglobin - Lab Tests OnlineSource
  2. 2
    Myoglobin Blood Test - MedlinePlusSource

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy