Mayo Score / Partial Mayo (ulcerative colitis)
Mayo score for ulcerative colitis activity: stool frequency, rectal bleeding, physician global assessment, and endoscopy subscores (each 0-3); full score 0-12, partial (no endoscopy) 0-9.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Stool frequency subscore
- 2
- Rectal bleeding subscore
- 2
- Physician global assessment
- 2
- Endoscopy subscore
- 2
Result: Full Mayo score 8 (0-12): moderate (6-10).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Full Mayo (0-12)
- Stool frequency + rectal bleeding + physician global + endoscopy (each 0-3); remission 0-2, mild 3-5, moderate 6-10, severe 11-12.
- Partial Mayo (0-9)
- Endoscopy omitted; remission 0-2, mild 3-4, moderate 5-6, severe 7-9.
What you enter
- Stool frequency subscore (0-3)
- Rectal bleeding subscore (0-3)
- Physician global assessment (0-3)
- Endoscopy subscore (0-3, optional)
How this is calculated
Schroeder KW, Tremaine WJ, Ilstrup DM. Coated oral 5-aminosalicylic acid therapy for mildly to moderately active ulcerative colitis. N Engl J Med. 1987;317(26):1625-1629. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.