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Myoglobin, Serum/plasma, Quantitative Immunoassay (CLIA)

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

This test measures the amount of myoglobin, a protein found in muscle tissue, in your blood. Myoglobin helps release oxygen to muscles during exercise or injury.

Quick summary

["Myoglobin helps identify muscle damage or heart-related conditions."]

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

Key facts at a glance

LOINC
74277-5
Short code
M TB IFN-g.CFP10 Ag Bld
Synonyms
M TB IFN-g.CFP10 Ag Bld
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test to check for signs of muscle injury (such as from overexertion, trauma, or conditions like myositis). It can also help evaluate heart problems, like a heart attack, because myoglobin is released into the blood when heart muscle cells are damaged.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into a vein in your arm to draw blood. If you’re concerned about discomfort, let your provider know.

What to Expect During the Test

The blood sample will be taken in a quiet, comfortable area. You’ll feel a brief pinch, but most people tolerate it well. The test itself takes only a few minutes.

What the Results Mean

Elevated levels of myoglobin may suggest muscle damage or heart injury. Your provider will compare your results with your medical history and other test findings to determine the next steps.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Myoglobin Level

Frequently asked questions

What causes myoglobin levels to rise?
Myoglobin levels can increase due to muscle injuries (e.g., strains, overexertion), certain medications (like statins), or conditions like myositis or heart attacks. It’s also sometimes seen in people with kidney problems, as myoglobin can build up in the blood if the kidneys aren’t filtering it properly.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time. Your provider will discuss the findings with you during your follow-up visit.
Can I eat or drink before this test?
You can eat and drink normally before this test unless your provider gives specific instructions. No fasting is required.
  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