What does a lactose intolerance test cost in Australia?

Most lactose intolerance tests in Australia are paid out of your own pocket — they're generally not covered by Medicare. This page gives a realistic picture of what each option costs, and why the cheapest reliable route often isn't a lab test at all.

The short answer

The common clinical test — the hydrogen breath test — is usually an out-of-pocket cost of around $70 (it isn't Medicare-rebated at the private clinics that typically run it), though the exact price varies by provider. Genetic tests are privately billed too. But a GP-supervised elimination trial, which is often all you need, can cost little more than a standard GP visit. So "getting tested" doesn't have to be expensive.

The one firm figure here — ~$70 (about $65 concession) per test — is published by one Melbourne provider (Melbourne Breath Test) and is charged per carbohydrate (lactose and fructose are separate). Other clinics differ, so treat it as a ballpark, not a national price.

Hydrogen breath test

You drink a lactose solution and breathe into an analyser at intervals over roughly one to three hours; unabsorbed lactose ferments and shows up as hydrogen in your breath. It's run at pathology labs and dedicated breath-test clinics — most people are pointed there by their GP, though some clinics accept you without a referral. The catch is cost: at the private providers that typically offer it, Medicare doesn't rebate it, so you pay out of pocket (around $70 at the provider we could confirm a price for). Prices and any bulk-billing depend on the clinic, so it's worth ringing ahead.

Genetic test

A genetic test looks for the gene variant behind adult-type lactase decline. It's privately billed and not Medicare-covered, and providers don't tend to publish a set price — you'd need to ask for a quote. Worth knowing before you pay: a genetic result tells you your inherited predisposition, not whether you're currently reacting, and it won't pick up lactose intolerance caused by a gut illness or another condition. For most people it's not the most useful first test.

Lactose tolerance blood test

An older option where blood glucose is measured after a lactose dose. It's less commonly used now and its accuracy is more limited than the breath test. Pricing depends on the pathology provider — we couldn't confirm a reliable figure, so ask your GP or lab.

The cheapest reliable route

Often, you don't need to buy a test at all. A GP can take your history and supervise a lactose-free trial followed by reintroduction — remove lactose for a couple of weeks, then bring it back and watch what happens. Done properly this is a legitimate way to confirm the link, and the main cost is a GP appointment (which may be bulk-billed). It's also the approach dietetic guidance leans on. See how lactose intolerance is tested for the full rundown, and what your GP can actually do.