What is the role of lab tests in the workup of erythromelalgia?

Updated: Nov 04, 2020
  • Author: Antoine N Saliba, MD; Chief Editor: Emmanuel C Besa, MD  more...
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A complete blood count (CBC) with differential should be obtained to search for evidence of a myeloproliferative disorder. In particular, it is important to look for a platelet count higher than 600 × 109/L (600 × 103 µg/L), as well as a hematocrit greater than 50% or an elevated granulocyte count (with all stages of maturation). Other laboratory results are nonspecific.

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