STI screening recommendations depend on age, pregnancy, symptoms, partners and types of sexual contact.
What to know
A clinician can help decide which infections and body sites should be tested. Honest information helps them choose appropriate tests.
Testing is confidential in many settings. A positive result is medical information—not a moral judgement—and many STIs are treatable.
Key points
Different tests check different infectionsOne sample does not test for everything.
Timing mattersSome infections have a window period.
Care should be confidentialAsk how results will be communicated.
Partners may need careTreatment and prevention reduce reinfection.
Signs and symptoms
Many STIs cause no symptoms. When symptoms occur, they can overlap with urinary, skin and gynaecological conditions.
Genital or urinary symptoms
Unusual discharge, sores, itching, burning urination or bleeding after sex may occur.
Pelvic or testicular pain
Lower abdominal pain, pain during sex or testicular pain needs assessment, particularly with fever or discharge.
Whole-body symptoms
Rash, swollen glands, fever or flu-like illness can occur with some infections.
No symptoms
A person can transmit an STI without knowing it, which is why risk-based screening matters.
Causes and contributing factors
STIs spread through vaginal, anal or oral sex and, for some infections, skin-to-skin contact, blood or pregnancy and birth.
Type of contactTesting sites should match exposure; throat or rectal infection can be missed if only urine or genital testing is done.
New or multiple partnersRisk depends on infection prevalence, condom use, partners’ testing and types of sexual contact—not moral character.
PregnancyUntreated infection can affect pregnancy or a newborn, making recommended antenatal screening important.
Window periodsTesting too soon after exposure may miss an infection; timing differs by organism and test.
How healthcare professionals assess it
Assessment is individual. Not every person needs every test, and results must be interpreted alongside symptoms, history and examination findings.
Confidential sexual history
A clinician asks about symptoms, partners, protection and contact sites to choose appropriate tests.
Sample selection
Testing may use urine, blood, vaginal or cervical swabs, and throat or rectal swabs.
Examination when needed
Sores, rash, discharge, pelvic pain or testicular pain may require examination rather than screening alone.
Results and partner care
Positive results should include treatment advice, partner notification options, abstinence or protection guidance and retesting plans.
Treatment and management
Treatment depends on the infection. Bacterial and parasitic STIs are often curable; viral infections are managed with monitoring, medication or prevention of complications.
Complete treatment
Take the full prescribed course and follow guidance about sex during and after treatment.
Partner management
Current or recent partners may need testing and treatment to prevent reinfection.
Retesting
Some infections require repeat testing because reinfection is common or because cure must be confirmed.
Prevention
Condoms, vaccination for HPV and hepatitis B, HIV PrEP when appropriate and regular testing reduce risk.
Practical steps you can take
Ask which infections and body sites your test covers.
Avoid sex or use protection exactly as advised until treatment is complete.
Do not share leftover antibiotics or treat a partner without clinical guidance.
Use a confidential partner-notification service where available.
Seek care promptly for pelvic pain, pregnancy, sores, fever or possible recent HIV exposure.
Questions to ask at an appointment
Writing questions down can make a consultation more useful, especially when symptoms are stressful or complex.
- Which tests do I need based on the types of contact I have had?
- Is it too early to test, and when should testing be repeated?
- If a result is positive, how will partners be treated or notified?
- Do I need HPV, hepatitis B vaccination or HIV prevention advice?
Common questions
Can I have an STI with no symptoms?
Yes. Many infections are asymptomatic, so feeling well does not rule them out.
Does a routine blood test check for every STI?
No. Different infections require different blood, urine or swab tests, and the correct body site matters.
Is STI care confidential?
Confidentiality rules vary by setting and age. Ask how information and results will be protected before testing.
When to speak with a healthcare professional
Arrange an assessment if symptoms concern you, affect daily life, persist, worsen or are different from what is normal for you.
You have unusual discharge, sores, burning or pelvic painContact a qualified healthcare professional for individual assessment.
A partner has an STI or possible exposureContact a qualified healthcare professional for individual assessment.
You are pregnant or planning pregnancy and need screening adviceContact a qualified healthcare professional for individual assessment.
This guide is educational. It does not diagnose a condition or replace care from a qualified healthcare professional.
Medical references
This guide was prepared from authoritative public-health and professional medical resources.
Have questions about this topic?
Discuss your symptoms, history and next steps privately with Dr. Benny.