Which lab tests are performed in the evaluation of myopathies?

Updated: Dec 28, 2017
  • Author: Courtney A Bethel, MD, MPH; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Answer

The following laboratory tests may be used to evaluate patients with myopathies:

  • Creatine kinase (CK) with isoenzymes
  • Electrolytes (calcium, magnesium)
  • Serum myoglobin
  • Serum creatinine and blood urea nitrogen (BUN)
  • Urinalysis - Myoglobinuria is indicated by positive urinalysis with few red blood cells (RBCs) on microscopic evaluation.
  • Complete blood count (CBC)
  • Erythrocyte sedimentation rate (ESR)
  • Thyroid function tests
  • Aspartate aminotransferase (AST)

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