Exact Sciences Cologuard approval (2014)
The FDA approved Cologuard, a stool-based DNA test for colorectal cancer, as an option for people avoiding colonoscopies.
Cologuard gained Medicare and private payer coverage over several years.
It proved a convenient, non-invasive test can shift screening behavior and build a large market, but coverage took time.
Shows both the potential and the friction of expanding screening access through a new test.
