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Serum or plasma concentration of myoglobin

Published: August 9, 2026Updated: August 16, 2026

Myoglobin is a protein found in muscle cells. When muscle tissue is damaged, myoglobin can leak into the bloodstream, which may be detected through this test.

Quick summary

["This test helps identify muscle injury or conditions that damage muscle fibers."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
23282-7
Short code
M myc capri Ab Ser Ql
Synonyms
M myc capri Ab Ser Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like muscle pain, weakness, or cramping, especially after exercise, trauma, or conditions such as rhabdomyolysis (severe muscle breakdown). It can also be used to monitor muscle damage in certain medical settings.

What Does the Test Measure?

Myoglobin is released into the blood when muscle fibers are damaged. Elevated levels can indicate recent muscle injury, but they typically rise and fall quickly, often within hours to days.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then separated into serum (liquid after clotting) or plasma (liquid after anticoagulant use) for testing.

What Are Common Causes of Elevated Myoglobin?

High levels of myoglobin can result from muscle injuries (e.g., strains, contusions), intense exercise, or conditions like muscle disorders, seizures, or certain medications that affect muscle function.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Myoglobin

Frequently asked questions

What does a high myoglobin level mean?
A high myoglobin level suggests recent muscle damage, which could be due to injury, intense exercise, or certain medical conditions. It’s important to discuss your symptoms and any recent activities with your healthcare provider.
How soon after muscle injury might myoglobin levels rise?
Myoglobin levels typically rise within hours after muscle damage and peak within 24 hours. They often return to normal within a few days.
Is myoglobin testing the same as creatine kinase (CK) or lactate dehydrogenase (LDH) tests?
No, myoglobin tests specifically measure myoglobin levels, while CK and LDH tests measure enzymes that also rise with muscle damage but serve different diagnostic purposes.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

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 16, 2026. · Read our editorial policy