Frequency
Some screening tests need to be done more often than others. The 
indicates the test(s) that need to be done least often.
Colonoscopy
- Every 10 years.
- In 10 years, you would do this test only once.
Virtual Colonoscopy
- Every 5 years.
- In 10 years, you would need to do this test 2 times.
Flexible Sigmoidoscopy
- Every 5 years.
- In 10 years, you would need to do this test 2 times.
Barium Enema
- Every 5 years.
- In 10 years, you would need to do this test 2 times.
FOBT
- Every year.
- In 10 years, you would need to do this test 10 times.
Stool DNA Test
- Every 2 to 5 years.
- In 10 years, you would need to do this test 2 to 5 times.