Had a total clean colonoscopy at 45, no polyps. at age 50, now am i still ok, or should i consider another one now. thanks?

Risk factors?: Unless high risk for polyps, e.g. Family history of cancer, polyps, personal history, generally start screening (eval w/no symptoms or signs) at age 50; sooner if risk factors. Got symptoms, exam sooner. No polyps, no symptoms, no blood-grossly visible or occult w/testing, likely can go 7-10 years (new recommendations). Annual rectal exam and stool test for blood (x3) good idea. Check with your doc.

10 years: Current guidelines recommend a repeat colonoscopy in 10 years assuming there is no family history of colon cancer or high risk polyps.