The Mayo score describes how active ulcerative colitis is. The full score, published in 1987, has four items scored 0 to 3, one of them from a colonoscopy. The partial Mayo score leaves out the colonoscopy, so it runs from 0 to 9 and can be worked out at an ordinary appointment.
You can answer two of its three items yourself: how many more stools a day you have than is normal for you, and how much bleeding there is. The third is your doctor’s overall assessment, so the total shows as “so far” until your IBD team adds it.