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Mayo Score for Ulcerative Colitis Activity Calculator

Sum of 4 sub-scores (stools, bleeding, endoscopy, MD assessment).

Compute the Mayo (Schroeder) disease activity score for ulcerative colitis: sum of four 0-3 sub-scores (stool frequency, rectal bleeding, endoscopic findings, physician global assessment). Total 0 = remission; 1-2 = mild; 3-5 = moderate; ≥ 6 = severe disease.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Mayo = stool + bleeding + endoscopy + physician sub-scores (each 0–3).

In depth

Compute the Mayo (Schroeder) disease activity score for ulcerative colitis: sum of four 0-3 sub-scores (stool frequency, rectal bleeding, endoscopic findings, physician global assessment). Total 0 = remission; 1-2 = mild; 3-5 = moderate; ≥ 6 = severe disease.