Free iFOBT kits for Australians 50–74. How it works, what a positive result means, and what to do next.
🇦🇺 AustraliaRACGP Red Book 2025
📋 Sources: National Bowel Cancer Screening Program — health.gov.au/nbcsp. RACGP Guidelines for Preventive Activities in General Practice (Red Book, 2025) — bowel cancer screening recommended from age 45. Clinical practice guidelines for colorectal cancer (Cancer Council Australia, 2023). MBS Book July 2026 — colonoscopy items 32222–32226 (TN.8.152). Cancer Council Australia — cancer.org.au. This page provides general information only — not medical advice. Speak to your GP about your individual screening needs and risk.
🎯 Am I eligible for a free kit?
What is the NBCSP?
The National Bowel Cancer Screening Program (NBCSP) is a free Australian Government program. It sends iFOBT kits (immunochemical faecal occult blood tests) to eligible Australians every two years. The test checks for tiny traces of blood in your stool that could indicate bowel cancer or pre-cancerous polyps — usually before any symptoms appear.
Bowel cancer is the second most common cancer in Australia. When detected early, the 5-year survival rate is over 90%. The screening program aims to find cancer or polyps before they cause symptoms, when treatment is most effective.
📋 Source: Australian Government Department of Health and Aged Care — health.gov.au/nbcsp. Cancer Council Australia.
Who gets a free kit?
📪 Automatic — ages 50 to 74
Kits are posted automatically every 2 years using Medicare enrolment data. No registration needed — the kit arrives in the mail. Complete it and return in the pre-paid envelope.
Free
🩺 Ages 45 to 49 — ask your GP
The NBCSP only automatically sends kits from age 50. However, the RACGP Red Book (2025) recommends GPs proactively offer iFOBT from age 45. If you are between 45 and 49, talk to your GP — they can order the test or discuss your individual risk. Source: RACGP Guidelines for Preventive Activities in General Practice (Red Book), 2025.
👥 Ages 75 and over
Not automatically sent a kit, but can discuss individual screening needs with your GP. Higher-risk patients (family history, previous polyps) may need a different approach.
How the test works — step by step
1
Kit arrives in the mail. It contains a sampling stick, collection tube, instructions, and a pre-paid return envelope.
2
Collect a small stool sample at home using the sampling stick. Follow the kit instructions — no dietary restrictions required for the iFOBT.
3
Post the sample in the pre-paid envelope to the laboratory. The kit includes everything you need — no trip to a pathology centre required.
4
Results are posted to you and optionally to your GP. Most results take 2–4 weeks.
5
If positive: see your GP promptly to discuss the next step, usually a colonoscopy. If negative: continue 2-yearly screening when your next kit arrives.
What does a positive result mean?
⚠️ A positive result does not mean you have bowel cancer. It means blood was detected in the sample and further investigation is needed.
Many things can cause a positive iFOBT — including haemorrhoids, polyps, inflammatory bowel conditions, and other benign causes. However, a positive result always requires follow-up.
Your GP will usually refer you for a colonoscopy to look directly at the inside of the bowel. This is the definitive investigation. Most people with a positive iFOBT do not have bowel cancer — but the colonoscopy is important to find out why blood was present.
After a positive iFOBT, colonoscopy is covered by Medicare (item 32222 — colonoscopy following a positive faecal occult blood test). Source: MBS Book July 2026, item 32222.
If you have a higher risk of bowel cancer
The NBCSP iFOBT is designed for people at average risk. If you have a higher risk, your GP may recommend a different approach — talk to them about your individual situation.
Moderate family history — one first-degree relative with bowel cancer at any age, or two relatives with cancer diagnosed at 60+: iFOBT every 2 years, with colonoscopy starting 10 years before the youngest affected relative’s age at diagnosis, or from age 50 (whichever is earlier).
Strong family history / genetic condition (FAP, Lynch syndrome): Surveillance colonoscopy is recommended — discuss timing with your GP or gastroenterologist.
Previous polyps: Surveillance colonoscopy intervals depend on the type, size, and number of polyps removed. Your gastroenterologist will advise.
📋 Source: Clinical practice guidelines for the prevention, early detection, and management of colorectal cancer (Cancer Council Australia, 2023). RACGP Red Book 2025. MBS Book July 2026 — colonoscopy items 32222–32226.