If you have ever asked what is included in a full STI screen, you are not overthinking it. It is a fair question, because “full screen” can mean slightly different things depending on your symptoms, the kind of sex you have had, and when your last exposure happened. The right test panel is not about ticking every box. It is about testing the infections that are relevant to you, at the right time, using the right samples.
That matters because many STIs have no obvious symptoms. You can feel completely fine and still have an infection that needs treatment, follow-up, or partner notification. A proper screen is about clarity, not guesswork.
What is included in a full STI screen?
In most cases, a full STI screen includes tests for chlamydia, gonorrhoea, syphilis, HIV, and hepatitis B, with hepatitis C included in some situations. Depending on your symptoms and sexual history, it can also involve testing for trichomoniasis, mycoplasma genitalium, herpes, or infections at specific sites such as the throat or rectum.
This is the part people often miss - there is no single universal panel that suits every person in every situation. A full screen should be tailored. Someone with vaginal sex only may need different samples from someone who has receptive anal sex or oral sex. Someone with a new partner but no symptoms may need different testing from someone with discharge, sores, or pelvic pain.
The infections commonly tested
Chlamydia and gonorrhoea
These are two of the most commonly tested STIs in Australia, and they are often checked together. They can infect the genitals, rectum, and throat. Many people have no symptoms, which is why routine screening matters.
Testing is usually done with a urine sample or a swab. The sample depends on where exposure happened. For example, if you have had oral sex, a throat swab may be needed. If you have had anal sex, a rectal swab may be part of a full screen.
HIV
HIV is usually checked with a blood test. Timing matters here because there is a window period after exposure when a test may not yet detect infection. If you test too early, you may need a repeat test later for a clear result.
A full STI screen often includes HIV because early detection makes a real difference. Treatment is highly effective, and knowing your status helps protect both your health and your partners.
Syphilis
Syphilis is also tested with a blood test. Rates have increased in parts of Australia, so it remains a key part of routine screening. Syphilis can be easy to miss because symptoms may be mild, temporary, or mistaken for something else.
Like HIV, syphilis has a timing issue. If the exposure was recent, repeat testing may be recommended.
Hepatitis B and hepatitis C
Hepatitis B is often included in a full STI screen, especially if your vaccination status is unclear or you have higher risk exposure. Hepatitis C may be included based on your history and risk factors. Both are checked with blood tests.
These infections are not always included in every basic sexual health check, so it is worth asking what your screen covers if you want a broader assessment.
What samples are used in a full STI screen?
A full STI screen is not always just one blood test. Depending on your needs, it may include urine, blood, and one or more swabs.
Urine testing is commonly used for chlamydia and gonorrhoea in the genital area. Blood tests are used for infections such as HIV, syphilis, and hepatitis B or C. Swabs may be taken from the vagina, cervix, throat, rectum, or any skin lesion, depending on symptoms and exposure.
This is where personalised care matters. If you are only given a urine test after oral and anal sex, that may miss infections in the throat or rectum. A true full screen looks at exposure sites, not just the simplest sample to collect.
What a full STI screen may not automatically include
The phrase “full STI screen” sounds comprehensive, but some infections are not routinely tested unless there is a reason.
Herpes
Herpes is not usually included in standard screening when there are no symptoms. Blood tests for herpes are not always straightforward and are not routinely recommended for everyone. If you have blisters, sores, or ulcers, a swab from the lesion is usually more useful.
Mycoplasma genitalium
This infection is not always part of routine asymptomatic screening. It is more commonly tested when someone has symptoms such as urethral irritation, discharge, pelvic pain, bleeding after sex, or ongoing symptoms after treatment for another STI.
Trichomoniasis
Trichomoniasis is less commonly included in broad routine panels in Australia unless symptoms, risk factors, or clinician judgement suggest it should be tested.
So if you are wondering what is included in a full STI screen, the honest answer is that “full” does not always mean every possible infection. It usually means the main infections are covered, with extra testing added when clinically appropriate.
When timing affects your results
One of the biggest reasons people get confused about STI testing is timing. Different infections show up on tests at different times after exposure. If you test too soon, you might get a negative result that needs repeating later.
Chlamydia and gonorrhoea can often be detected relatively soon after exposure, while blood-borne infections such as HIV and syphilis may require a longer wait for the most accurate result. If you have symptoms, you should still get tested straight away. If you had a recent risk event but no symptoms, you may need testing now and again after the relevant window period.
That does not mean testing is pointless if it is early. It means testing may be staged. A good sexual health service will explain which results are reliable now and which ones may need follow-up.
Symptoms change what should be tested
If you have symptoms, a full STI screen may need to go beyond the standard panel. Symptoms such as genital sores, unusual discharge, burning when you wee, testicular pain, pelvic pain, bleeding after sex, anal discomfort, or a rash can all point to different causes.
Sometimes the issue is an STI. Sometimes it is not. BV, thrush, UTIs, skin conditions, or irritation can overlap with STI symptoms. That is why symptom-based testing should not be one-size-fits-all. You may need extra swabs, a urine test, blood tests, or treatment advice based on the pattern of symptoms.
A full screen should reflect how you actually have sex
This part is simple but important. Your test should match your real exposure, not assumptions. If you have vaginal sex, oral sex, anal sex, or sex with multiple partners, that affects what samples are needed. Your gender, anatomy, contraception, and whether condoms were used can all shape the best testing plan.
There is no judgement in that. It is just clinical accuracy. The more honest the sexual history, the more useful the screen.
For many Australians, privacy is part of the decision too. That is why telehealth-led options have become so popular. Services like STI Clinic Australia let people request testing access online, attend a major pathology collection centre, and get medical review without the friction of a traditional clinic visit.
How often should you get a full STI screen?
That depends on your circumstances. Some people test once after a specific exposure or when starting a new relationship. Others should test more regularly, especially if they have new or multiple partners, are part of a higher-risk group, or have had a recent STI.
If you have symptoms, do not wait for a planned routine check. Get tested. If you have no symptoms but your sex life has changed, regular screening is still sensible. Peace of mind is a valid reason to check your sexual health.
The better question is whether your screen is right for you
When people ask what is included in a full STI screen, they are usually really asking whether they are being properly checked. That is the right question. A good screen covers common infections, uses the right sample sites, considers timing, and adjusts for symptoms and risk.
You do not need to memorise every test. You just need a service that makes the process clear, discreet, and medically sound. Sexual health care should feel normal, because it is. If something is on your mind, getting tested is often the fastest way to replace uncertainty with an answer.