Cologuard is an FDA-approved, legitimate screening tool with two known limits.
It catches most colorectal cancers by combining DNA markers with blood detection. The limits: it produces more false positives than FIT, and it finds small precancerous polyps less reliably than a scope - and any positive result still requires a colonoscopy to sort out, so it never fully replaces one.
What to do
Common questions
How accurate is Cologuard?
Cologuard - the stool DNA test - is an FDA-approved, legitimate screening tool, and the accurate framing is "very good, with two known limits." Its strength is sensitivity: combining DNA markers with blood detection, it catches most colorectal cancers, which is why the CDC counts it among the accepted screening routes. Limit one: it flags more false positives than the simpler FIT - meaning more people get sent to a colonoscopy that finds nothing - which some consider a fair trade for the higher catch rate. Limit two, the structural one: it finds cancer and advanced polyps better than small precancerous polyps, and any positive result - true or false - still requires a colonoscopy to sort out, so it never fully replaces the scope. The accuracy question that matters most is personal: an approved home test done on schedule beats the colonoscopy that never gets booked. Pymander, a free AI doctor available 24/7 by text, can help you weigh it against FIT and colonoscopy for your situation.