What's the Difference Between a Rapid Test and a Lab Test?

This article is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Clinical guidelines are reviewed and updated over time, always confirm current advice with a qualified health provider. If you're experiencing severe pain, fever, or other urgent symptoms, seek immediate medical attention rather than relying on this article or at-home testing.

If you've searched for an at-home STI test in Australia, you've probably come across two very different types of product: rapid tests and lab-processed tests. They're often talked about as if they're interchangeable. They're not. Here's what actually separates them.

A rapid test, also called a point-of-care test, gives you a result at home within 15 to 30 minutes. It works similarly to a COVID rapid antigen test: you collect a sample yourself, apply it to the test device, and read the result at home without sending anything to a laboratory.

Rapid, point-of-care tests are available at some Australian pharmacies for chlamydia and gonorrhoea. These are currently designed for women only and aren't available as an option for men.

A lab-processed test uses NAAT (nucleic acid amplification testing), the same method used by pathology laboratories, GP clinics, and sexual health clinics across Australia. You still collect your own sample at home, but instead of reading a result yourself, you post the sample to an accredited laboratory for processing.

TestSmart's kits are lab-processed. Results are reviewed by an Australian-registered GP and delivered securely online, typically within 3–4 business days from the lab's receipt of your sample.

Result speed. Rapid tests give you a result in minutes, at home, with nothing to send away. Lab tests take a few days, since the sample needs to be processed at a laboratory. 

Accuracy and sensitivity. Lab-processed NAAT testing is generally considered more sensitive than rapid, point-of-care tests. Rapid tests still play a useful role as a fast initial screen, but their lower sensitivity is why a positive result is typically followed up with a lab test.

Confirmation. A positive result from a rapid test typically needs to be confirmed by a lab test before treatment can begin. A lab test result doesn't require this extra step, since it's already been processed using the more sensitive method.

What's covered. Rapid tests are typically limited to specific infections and sites. Currently, rapid tests cover chlamydia and gonorrhoea via a vaginal swab, for women only, with no rapid test option available for men. Lab-based kits can test additional sites, such as throat and rectal swabs where relevant, and are available for both men and women.

Clinical support. Lab-processed testing through a service like TestSmart includes GP review of your result and, if positive, GP-guided treatment as part of the process. With a rapid test, you'll need to arrange your own GP visit if the result is positive, to confirm it and start treatment. Some people prefer managing this step themselves, while others prefer having it built in from the start.

Yes. Lab-processed at-home testing uses the same NAAT methodology and accredited laboratories as clinic-based testing. The accuracy of the result depends on the testing method and lab processing, not on where the sample happened to be collected.

Is a rapid test as accurate as a lab test?

No. Rapid tests are less sensitive than lab-processed NAAT testing, and a positive result needs to be confirmed by a lab test before treatment can begin.

Can men use a rapid test?

No. Rapid tests currently available in Australian pharmacies are designed for women only, with no equivalent rapid test available for men. Lab-processed testing is available for both men and women.

If my rapid test is negative, do I still need a lab test?

A negative rapid test result is generally considered reliable, but it carries a higher chance of a false negative than a lab test, given its lower sensitivity. If you have ongoing symptoms or concerns, a lab test is the more thorough option.

Does TestSmart offer rapid testing?

No. TestSmart offers lab-processed testing only, using NAAT technology and GP-reviewed results.

Rapid tests and lab tests both have a place, but they're not the same thing. A rapid test gives you a fast initial read that still needs confirming. A lab test gives you a definitive, GP-reviewed result from the outset. If you want a result you can act on without a second step, lab-processed testing is the more complete option.

You can order a lab-processed at-home kit at testsmart.com.au.

TestSmart's testing and treatment pathways are reviewed by Australian-registered GPs and follow current Australian clinical guidelines. This article is general information only and does not replace individual medical advice. Your circumstances, symptoms, and test results should always be discussed with your reviewing doctor.