Myoglobin Serum

Original price was: ₹1,600.00.Current price is: ₹1,299.00.

Myoglobin (Serum) Test

The Serum Myoglobin Test measures the level of myoglobin, a protein found in heart and skeletal muscles. It is released into the bloodstream when muscle damage occurs.


Why is the Myoglobin Test Done?

Early Detection of Heart Attack (Myocardial Infarction) – Myoglobin is one of the first markers to rise after heart muscle damage.
Assess Rhabdomyolysis (Severe Muscle Breakdown) – Seen in trauma, muscle disorders, or extreme exercise.
Monitor Muscle Disorders – Such as muscular dystrophy or inflammatory muscle diseases.
Check for Kidney Damage – High myoglobin levels can cause myoglobinuria, leading to acute kidney injury (AKI).


Normal Reference Range

📌 Normal Myoglobin Levels:

  • Men: 28–72 ng/mL
  • Women: 25–58 ng/mL

(Reference ranges may vary slightly by laboratory.)


Interpreting Myoglobin Levels

Myoglobin Level (ng/mL) Possible Interpretation Potential Causes
Normal (<72 in men, <58 in women) No significant muscle damage Healthy muscle function
Slightly Elevated Mild muscle injury Exercise, minor trauma, muscle strain
Moderately Elevated (100–500 ng/mL) Muscle damage or cardiac injury Myocardial infarction, rhabdomyolysis, myositis
Highly Elevated (>500 ng/mL) Severe muscle breakdown Rhabdomyolysis, crush injury, severe heart attack

📌 Myoglobin rises within 1-3 hours of a heart attack, peaks at ~6-12 hours, and returns to normal in 24 hours.


Causes of Elevated Myoglobin

🔹 Cardiac Causes:
Heart Attack (Myocardial Infarction) – Early marker but not heart-specific (troponin is preferred).
Cardiac Surgery or Trauma – Can cause muscle injury.

🔹 Skeletal Muscle Causes:
Rhabdomyolysis – Severe muscle breakdown (from trauma, drugs, extreme exercise).
Muscle Diseases – Muscular dystrophy, myositis, polymyositis.
Crush Injury or Burns – Can lead to high myoglobin release.

🔹 Other Causes:
Severe Sepsis, Shock, or Multisystem Organ Failure
Intense Exercise or Seizures – Can cause temporary myoglobin elevation.


Next Steps After an Abnormal Myoglobin Test

🩺 If Elevated:
🔹 Perform Troponin Test – To confirm a heart attack.
🔹 Order Creatine Kinase (CK) Test – To assess muscle damage.
🔹 Check Kidney Function (Creatinine, BUN) – Myoglobin can damage the kidneys.
🔹 Hydration Therapy – If rhabdomyolysis is suspected, IV fluids may be needed.

Troponin is a more specific test for heart attacks, while myoglobin is more useful for general muscle injury.