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Doctor recommended Cologuard test to check for colon cancer

Codes and Frequencies

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For sample adults aged 40 years or older who had been recommended to have a particular test to look for problems in the colon or rectum in the previous 12 months (COLTDR1YR), COLCANCOLG indicates whether a physician or other health professional recommended they have a Cologuard test to check for colon cancer. Please see the universe tab for details on changes to the universe over time.

Please refer to COLTDR1YR for a list of the variables covering possible recommended tests for colon or rectal problems.


The 2018 Field Representative's Manual noted: "Cologuard is a new type of stool test to check for colon cancer. Unlike other stool tests, Cologuard looks for changes in DNA in addition to checking for blood in your stool. The Cologuard test is shipped to your home in a box that includes a container for your stool sample."


The NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.


  • 2018: Sample adults 40+ who have had tests recommended to look for problems in the colon (COLTDR1YR) and who have NOT had a colonoscopy in the past 10 years, sigmoidoscopy in the past 5 years, CT colonography in the past 5 years, or home blood stool test in the last year and who had another type of test recommended.
  • 2019: Sample adults age 40+ whose doctor recommended testing for colon or rectal problems in the past 12 months (COLTDR1YR).


  • 2018-2019