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JAMA Diagnostic Test Interpretation
May 24/31, 2016

Elevated Hemoglobin or Hematocrit Level

Author Affiliations
  • 1Oregon Health and Sciences University, Portland
  • 2Mayo Clinic, Scottsdale, Arizona
JAMA. 2016;315(20):2225-2226. doi:10.1001/jama.2016.2435

A 71-year-old woman presented for evaluation of an elevated hemoglobin level (16.2 g/dL) that was incidentally discovered during a recent emergency department visit. She reported night sweats and some excessive fatigue over the last few months. She was unaware of any family history of blood disorders. Her physical examination revealed normal heart sounds and no splenomegaly (Table).

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