Private STI Testing: Which Tests, When to Test and What to Expect

In short: Private STI testing lets you book a confidential sexual health check at a time that suits you, with tests for infections such as chlamydia, gonorrhoea, HIV, syphilis and hepatitis. The right tests depend on your symptoms, the type of contact you have had and when it happened, because each infection has a "window period" before it shows up reliably. Free, confidential testing is also available from NHS sexual health clinics.

This guide, written by a Ready Health prescribing pharmacist, explains which sexually transmitted infections (STIs) can be tested for, when to test, and what happens at a private sexual health appointment.

Why do people choose private STI testing?

NHS sexual health services offer free, confidential care, and many areas provide free home testing kits. Some people choose a private service for practical reasons, such as:

• Booking an appointment at a time or location that is convenient
• Having a face-to-face consultation with the same clinician from start to finish
• Combining STI tests with other health checks or blood tests

Both routes are confidential. What matters most is getting tested at the right time and acting on the results.

Which STIs can be tested for?

Some tests are only useful in certain situations. For example, herpes is best tested with a swab from an active sore, and Mycoplasma genitalium testing is generally recommended only when there are symptoms or a partner has been diagnosed. There is no routine HPV test for men. Your clinician will help you choose tests that are actually useful for you.

When should I get tested for STIs?

Consider a test if:

• You have had unprotected sex with a new or casual partner
• A condom split or came off
• A partner has told you they have an STI
• You have symptoms that could be caused by an STI
• You are starting a new relationship and want to check before stopping condoms

If you test before the window period has passed, you may be advised to test now and again later. If you think you have been exposed to HIV in the last 72 hours, contact an NHS sexual health clinic or A&E straight away, as post-exposure prophylaxis (PEP) may be an option and works best when started as soon as possible.

What are the common symptoms of an STI?

Many STIs cause no symptoms, which is why testing matters. When symptoms do appear, they can include:

• Unusual discharge from the vagina, penis or anus
• Pain or burning when passing urine
• Bleeding between periods or after sex
• Sores, blisters, lumps or rashes around the genitals or anus
• Itching or discomfort in the genital area
• Pain in the lower tummy or testicles

These symptoms can also have other causes, so it is worth getting checked rather than guessing.

What happens at a private sexual health appointment?

1. Confidential consultation

The clinician asks about symptoms, recent sexual contacts and timings. This helps decide which tests are needed and when.

2. Sample collection

Depending on the tests, you may give a urine sample, have a blood test or take a swab. Self-taken swabs are often possible.

3. Results

Samples are sent to an accredited laboratory. Turnaround times vary by test, and your clinician will tell you how and when you will receive results.

4. Treatment and partner notification

If a test is positive, you will be advised on treatment and follow-up. Some infections are treated with prescription medicines, and a prescriber decides what is appropriate. Some conditions, such as HIV or syphilis, are usually managed by specialist NHS services, and you may be referred. It is also important that recent partners are informed so they can be tested.

Frequently asked questions

Is private STI testing confidential?

Yes. Results are confidential and are not shared without your consent, except in rare situations where the law requires it.

Can I get an STI test without symptoms?

Yes. Many infections, including chlamydia, often have no symptoms, so testing after a new partner is sensible.

How soon after sex can I test?

It depends on the infection. Chlamydia and gonorrhoea tests are reliable from around two weeks; HIV and syphilis take longer. Testing early may mean you need a repeat test.

Are home STI test kits accurate?

Kits processed by accredited laboratories can be reliable if samples are taken correctly. Rapid tests that give results at home vary in accuracy, so a positive result should always be confirmed.

Can I get free STI testing on the NHS?

Yes. NHS sexual health clinics provide free, confidential testing and treatment, and you do not need a GP referral.

Key takeaways

• Many STIs have no symptoms, so regular testing after new partners is important.
• Each infection has a window period; testing too early can miss an infection.
• Seek urgent help within 72 hours if you may have been exposed to HIV.
• Both NHS and private services offer confidential testing.
• Tell recent partners if you test positive so they can be checked too.

Sources and further reading

• NHS: Sexually transmitted infections
• NHS Let's Talk About It: Testing for STIs
• NHS: Find a sexual health clinic
• British Association for Sexual Health and HIV (BASHH)

Last reviewed: October 2026 by Shamir Patel, Independent Prescribing Pharmacist, Ready Health. This article is general information and does not replace advice from your own clinician.

If you live in or near Wigan or Standish and would like a confidential consultation, find out more about our sexual health testing service.