The poo-test kit, or a colonoscopy? Let's work out the right first step.

Bowel screening is for everyone in the age band, regardless of sex or gender.

You got the bowel-screening kit in the mail and you're not sure whether to bother — or you're wondering if you should just skip it and ask your GP for a colonoscopy instead. In Australia, for an average-risk person with no symptoms, the free at-home test that comes in that kit is the recommended first step. This page lays the two tests side by side and gives you the questions to take to your GP, so you walk in already knowing more than most.

Roughly how old are you?

This is the one thing I need — it changes which test is right for you. A rough number is fine.

Do you have any bowel symptoms right now?

Screening is for people without symptoms — so this one matters a lot.

Family or personal history — optional

Tick anything that applies. This can change the test, the starting age, and the schedule your GP suggests.

Anything else you want to bring up? — optional

This goes straight onto your printed card as a note to raise with your GP. Nothing you type leaves your browser.

0/400

Or tap an example to fill it in:

Dr HB Lo

Integrative GP · Bowel cancer screening — decision aid

You

The reframe

The two tests, side by side

Same questions, both tests — so you can feel the difference at a glance.
Question	At-home iFOBT(the mailed kit)	Colonoscopy
What it is	A poo sample you collect at home; checks for tiny traces of blood	A camera examines the whole bowel; done in hospital/day clinic under sedation
Who it's the first test for	Average-risk, no symptoms, 45–74← recommended first	People with a positive iFOBT, symptoms, or higher-risk history
Where / cost	Home · free through the program	Day procedure · bowel prep the day before · costs vary
Risk to you	Essentially none	Small but real — bleeding or bowel perforation in a minority of a percent of cases
If it's positive / abnormal	You're referred on for a colonoscopy	Findings discussed straight after

Sources: the iFOBT is the program's free, home-based screening test — NBCSP information booklet. Colonoscopy is the follow-up test, with rare risks of bleeding, perforation, or damage to the bowel or spleen — Cancer Council — what is a colonoscopy. Supporting (international, flagged): screening-colonoscopy perforation around 0.1%, bleeding low — systematic review/meta-analysis (PMC), cited because the AU tier says "rare" without a single headline figure.

The honest part — both ways

The poo test isn't perfect, and a positive result usually isn't cancer. One round of the iFOBT can miss some cancers and polyps — that's why it's repeated every 2 years, not done once. And if it comes back positive, try not to panic: of people who have a follow-up colonoscopy after a positive screening test, most do not have cancer — roughly 1 in 26 positive-test follow-ups finds a confirmed or suspected cancer; many findings are polyps, haemorrhoids or inflammation instead.

But here's the part that matters: people whose bowel cancer is found through screening are far more likely to have it caught early — and have a lower risk of dying from it — than people diagnosed outside the program. And yet only about 2 in 5 invited people actually do the test.

Sources: "most positives aren't cancer" + the ~1 in 26 figure — Cancer Council — screening and Understanding your FOBT results. Earlier-stage diagnosis and lower mortality for screen-detected cancers — AIHW NBCSP monitoring 2025. Participation ~2 in 5 — AIHW participation data.

If you've already had a positive result, that's a conversation to have with your GP now — not a reason to wait. These figures are general program statistics, not an interpretation of any one person's result.

Take it with you

Email the one-pager to take to your GP.

A clean printable: which test is the right first step for you, the questions to ask, and the "what a positive result actually means" line — so you walk in already knowing more than most.

Your email

If your situation isn't the simple one

Want the questions worked through for your exact situation — a different schedule for a strong family history, or the "do I keep screening past 74?" conversation? The bowel-screening decision kit walks through it, with the BRAN questions and the risk-number visual for screening alongside.