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Reason for most recent office blood stool test

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For sample adults over age 40 who ever had an office blood stool test, BSTOYL reports the main reason for most recent office blood stool test. Recognized responses were: part of a routine exam, because of a problem, or some other reason.


In 2015, the wording of the question asking whether respondents had ever had a blood stool test during an office visit BSTOEV changed slightly to more inclusive language. Prior to 2015, respondents were asked whether they ever had "a blood stool test" in which a doctor or other health care professional collected a stool sample during an office visit. Beginning in 2015, the language was expanded to "a blood stool or FIT test".


  • 2010; 2015: Sample adults age 40+ who have had an office blood stool test.


  • 2010, 2015