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Myoglobin (Serum/Plasma) Immunoassay

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

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

Quick summary

["Myoglobin can signal muscle damage or heart issues—ask your doctor why it was ordered."]

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

Key facts at a glance

LOINC
75684-1
Short code
Deprecated blaNDM Bld Pos Ql Prb Mag
Synonyms
Deprecated blaNDM Bld Pos Ql Prb Mag
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-mag-capture
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

What Does Myoglobin Measure?

Myoglobin is released into the bloodstream when muscle cells are damaged, often due to injury, exercise, or conditions like heart attacks. Elevated levels may indicate acute muscle injury or, rarely, heart problems.

Why Might This Test Be Ordered?

Your doctor may order this test if you’ve experienced recent muscle trauma, chest pain, or symptoms like shortness of breath, which could suggest muscle or heart damage.

What to Expect Before the Test

No special preparation is needed, but avoid intense exercise 24 hours before testing. Bring any medications or supplements you’re taking to your doctor’s visit.

What to Expect During the Test

A small blood sample will be drawn from a vein in your arm. It usually takes a few minutes, and you may feel a brief pinch. The sample is sent to a lab for analysis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Myoglobin Level

Frequently asked questions

How soon after muscle injury might myoglobin levels rise?
Myoglobin levels can begin to rise within hours of muscle damage and peak in 12–24 hours. They may stay elevated for up to 3–5 days, so follow-up testing may be needed.
Can myoglobin levels be affected by medications?
Some medications (like statins for cholesterol or certain pain relievers) may indirectly influence muscle function, but they don’t directly alter myoglobin levels. Always discuss your medications with your doctor.
Is this test always done with other blood tests?
Sometimes yes—your doctor may order it alongside other tests like creatine kinase (CK) or troponin to better assess muscle or heart damage. Results are interpreted together with your symptoms and medical history.
  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