MDCalc

Spanish Network on Mastocytosis (REMA) Score

Predicts mast cell clonality on bone marrow biopsy in patients with systemic mast cell activation symptoms.

Gender

Urticaria and/or angioedema

Presyncope and/or syncope

Tryptase

Baseline serum tryptase

Result:

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Advice
  • A score of ≥2 indicates a high probability for clonal mast cells in the bone marrow or systemic mastocytosis, warranting a bone marrow biopsy.
  • For a score <2, consider additional diagnostics depending on clinical judgment, such as a KIT mutation analysis and/or genotyping for hereditary alpha tryptasemia.
  • This score should not be the sole criterion for determining the need for a bone marrow biopsy and should be interpreted in conjunction with clinical judgment.