A blood test is now an option to screen for colorectal cancer. Here’s what to know.​A blood test is now an option to screen for colorectal cancer. Here’s what to know. 

 For the first time, a blood test has been added to the list of the American Cancer Society’s recommended screenings for colorectal cancer.  ​​For the first time, a blood test has been added to the list of the American Cancer Society’s recommended screenings for colorectal cancer.