Colorectal cancer population screening

Did you take part in the colorectal cancer population screening, and was blood found in your stool? Please consider coming in for further diagnostic examination at the Netherlands Cancer Institute colonoscopy center. Anyone is welcome at our center, even if The National Institute for Public Health and the Environment (Rijksinstituut voor Volksgezondheid en Milieu; RIVM) has referred you to a different colonoscopy center. You can change your appointment through DigiD. Please see the instructions you received together with your screening results for more information. We can usually schedule your colonoscopy within 15 weekdays. Your colonoscopy will be done by gastroenterologists at the Netherlands Cancer Institute. 

The first Dutch colorectal cancer population screening took place in 2014. This population screening program is intended for all men and women between 55 and 75 years old and is carried out by the RIVM. Your stool will be screened for blood. Tests are sent to your home address and can be returned directly to the lab by mail. 


If you have any questions, please contact the staff of the colonoscopy center at +31 (0) 20 - 512 9111 or


Your first consultation will be near the entrance of clinic 3 at the ground floor at the Netherlands Cancer Institute. Please register with the assistant in hallway B, the first hallway on your right.


You will get your colonoscopy at our Diagnostics and Treatment Center (Onderzoek en Behandelcentrum; OBC) on the second floor of the Netherlands Cancer Institute. 

(Paid) parking is available at the Netherlands Cancer Institute parking garage. 

What can we do for you?

Intake consultation

We will invite you for an intake consultation concerning your test results. You will meet with a clinical nurse specialist or NKI nurse who can inform you about the procedure and will consult your medical history with you to see if there are any particularities, or reasons to abstain from additional diagnostics. Please remember to bring your medical history and a list of your medication. 


During your colonoscopy, we inspect the inside of your colon to see if there are any polyps or signs of colon cancer. We will schedule your colonoscopy together with you within 10 weekdays after your intake consultation. Your colonoscopy will be done by gastroenterologists at the Netherlands Cancer Institute at the Diagnostics and Treatment Center. You will receive your preliminary results directly after your colonoscopy. 


Your final results will come in one week after your colonoscopy, together with a recommendation. If we have detected polyps in your colon, we may invite you to come to the Netherlands Cancer Institute for a colonoscopy screening in 3 to 5 years. If we detect cancer cells in your colon, we can refer you our Colon Cancer Center for further treatment

When should you not take part in the population screening?

  • The population screening will not benefit you if you are currently receiving treatment for colon cancer.  
  • Please consult your general practitioner or practicing physician before your participation if you have received a colonoscopy within the past five years.
  • If you are seeing a gastroenterologist for treatment, please consult him or her about your participation.

If you are unsure whether you should participate in the population screening, please contact your general practitioner or practicing physician.

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