Get a sexual health check up with
Fettle’s STI test kits

Simple, discreet & convenient self testing at home

How it works

Discreet package

We’ll ask you a few questions to help us recommend a test kit. We’ll deliver your kit the next working day through your letterbox, in a plain, discreet envelope, and update you on the delivery via text.

Using your kit

To use your kit, read the instruction card before completing your samples. If you’re using the blood test kit, watch the blood test video before you start. Our professional clinicians are also available to support you. Speak to them if you have any symptoms that concern you.

Your Results

Return your test using the Freepost envelope included - your samples will go straight to our lab. You’ll receive your test results by text, approximately 72 hours after your samples have been received at the lab.

What's in the self test kit?

Our kits test for 6 common sexually transmitted infections (STIs - sometimes called STDs). We will recommend test kits based on your sexual health risk, but you can choose which kits you order.

For chlamydia and gonorrhoea tests, you’ll need to take a small swab from your throat, rectum or vagina, or provide a urine sample. This depends on what type of infection you are testing for. For HIV, syphilis, hepatitis B or hepatitis C, we’ll send you a blood test kit. You only need to complete one blood sample to test for all four STIs.

The contents of the test kit will depend on what type of genitals you have and what type of infection you’d like to test for.

Gonorrhoea & Chlamydia

The gonorrhoea & chlamydia test kit may contain:

A urine test

A vaginal swab

An oral swab
(recommended if you have oral sex with male partners)

A rectal swab
(recommended if you have anal sex)

HIV, syphilis, hepatitis B or hepatitis C

The blood test kit allows you to take a few drops of blood from your finger. It contains:

An alcohol swab
to clean your finger

A small lancet
to make a tiny cut on your fingertip

A sample tube


All home test kits include an instruction card to help you collect your samples, as well as a Freepost return envelope.

Tests we offer

  • HIV£23
  • Syphilis£23
  • Genital Chlamydia and Gonorrhoea£26
  • Rectal Chlamydia and Gonorrhoea£26
  • Oral Chlamydia and Gonorrhoea£26
  • Hepatitis B£26
  • Hepatitis C£26

Save up to 20% when you buy multiple tests.

Choose your test

What are STIs & STDs?

Sexually transmitted infections (STI) are bacteria or viruses passed from person to person through sexual contact. Sometimes they are referred to as sexually transmitted diseases (STD) or venereal diseases.

Bacterial infections such as chlamydia, gonorrhoea and syphilis are treated with antibiotics.

HIV, herpes and hepatitis B and C are caused by viruses and treated with anti-viral medications. Some of these cannot be cured but there are very effective medications that make these infections manageable.

Should I get tested?

STIs often have no symptoms or symptoms can go unnoticed. If you are sexually active and changing partners, we recommend that you test for STIs regularly.

If you are sexually active and have changed partner then we recommend that you test for chlamydia, gonorrhoea, HIV and syphilis.

We recommend testing for hepatitis B only for the following groups: men who have sex with men, people who are paying for sex or getting paid for sex, people who inject drugs, people who are born in a country with a high rate of hepatitis B (mainly countries in Africa, Asia and South America) or who have had sex with someone born in a country with a high rate of hepatitis B, someone who has had a sexual partner who was infected with hepatitis B.

We recommend testing for hepatitis C for people who inject drugs and men who have sex with men who also have HIV.

We’ll ask you some questions as you order so we can recommend the most appropriate test kits.

Fettle is not able to offer test kits to people who are under 18. If you are under 18 and are sexually active, you can find your local sexual health service sexual health clinic. They can offer you confidential testing as well as support and information about sex and contraception.

If you are at risk, you should test for STIs even if you do not have symptoms

When should I test?

If you’ve recently had unprotected sex, or you are worried that you may have come into contact with an STI, then tests for chlamydia, gonorrhoea, HIV and syphilis, should be done about 4 weeks after exposure (if you are particularly concerned about syphilis, you may need to wait 3 months after possible infection to ensure the results are accurate). This is because most STIs do not immediately show up in tests after infection.

Chlamydia and gonorrhoea show up in tests up to 2 weeks after infection. HIV can take up to 4 weeks. Syphilis up to 3 months. Hepatitis B and hepatitis C are detectable with the tests that we use from about 12 weeks after infection.

We recommend
testing every3-12 monthsdepending on your risk

Choose your test

When to test

Please note, using our tests, hepatitis B and hepatitis C are detectable from around 12 weeks after infection.

Why STI testing is so important

Chlamydia and gonorrhoea are often symptomless, but if left untreated can cause inflammation in the female reproductive system. This can increase the risk of fertility problems and ectopic pregnancy in some people. In men, chlamydia and gonorrhoea can cause the testicles and epididymis to become inflamed and painful.

If syphilis is left untreated for many years it can affect vital organs including the brain and heart.

Untreated HIV will affect your immune system, making you more prone to potentially life-threatening infections such as pneumonia.

Hepatitis affects your liver and if left untreated can cause scarring of the liver (cirrhosis) and liver failure in some people.

Testing for and treating infections helps prevent the spread of STIs. If you change sexual partners, it is a good idea to do an STI test. If you are starting a new relationship, you should both get tested to ensure that you are not passing on an infection to each other without knowing it.

If you change sexual partners it is a good idea to do an STI test

How are STIs passed on?

STIs can pass from one person to another during sex, especially if you don’t use a condom. Some STIs can be passed on through oral, anal or vaginal sex.

Most infections can be cured or treated so that you will not pass the infection on in the future. If you are diagnosed with an STI, you should avoid having sex with anyone until you have completed treatment. If you do have sex, the infection could be passed to your sexual partner.

Hepatitis B can be passed on during sex but can also be passed on from mother to child at the time of birth and to household contacts.

Hepatitis C can be passed from mother to child at the time of birth but is mainly passed through needle sharing when injecting drugs.

What will happen if my test result is positive?

  • if your test result is positive for chlamydia then we can offer treatment by post
  • if your test result is positive for gonorrhoea then we will refer you to your nearest clinic as the treatment is an injection
  • if your test result is reactive for HIV then this does not necessarily mean that you have this infection, so we’ll refer you to a sexual health service for confirmatory testing
  • if your test result is reactive for syphilis then you will be referred to a sexual health service for confirmatory testing
  • if your test result is reactive for hepatitis B or hepatitis C then you will be referred to a sexual health service for confirmatory testing and then to a liver specialist to assess the infection further.

How do you prevent sexually transmitted infections (STIs)?

Condoms are the only contraceptive method that protects against sexually transmitted infections. You can get them free from the NHS or buy them in pharmacies, supermarkets, vending machines in most pubs and clubs, and online.

Make sure to check the use-by date on the packaging, and always use condoms with CE marking. This means they have been tested to European safety standards.

If you are going abroad, don’t forget to take some with you!

Support and advice

Our clinicians are available by text, phone or email to support you with information and guidance about sexual health and STI testing, once you’ve placed an order with Fettle. You can also book a confidential telephone consultation with one of our specialist clinicians at a time that suits you. If you have recently had unprotected sex and are worried about pregnancy, find out about your emergency contraception options.

If you think you are at risk of contracting HIV, preventative medication (PEP) is available but must be started within 3 days of exposure. Find out more about PEP and where to get treatment.


You will need to make a very small cut in your finger and drop a small amount of blood into a tube.

Here are some top tips are from people who have used the test kit.

To help you prepare:

relax and be patient (it can take longer for some people than others) if you’re nervous, ask someone to be there with you watch the instruction video and read the instruction leaflet (we know people find the test easier to complete after watching the video) tie long hair back and take off any scarves or jewellery that could get in your way lay the test kit items and your two tissues on a clean, flat surface below your waist.

To help blood flow to your finger:

take a hot shower or bath, or hold your hand under warm water for a few minutes, (when your hands are warm, blood flows easier) stay standing and keep your arm straight with your hand below your waist aim for the middle of the tip of your finger, not too close to your fingernail push lancet down hard against your finger wipe the first dot of blood away with a clean tissue to stop the blood congealing if your finger dries up, wait a while, warm up your hand, use another finger and make sure you press the lancet down hard against your finger.

You can watch the blood test instruction video here.

Every test kit has to be sent back to the lab for analysis. There’s a grey freepost return envelope included. Your details will not appear on any of the samples or the freepost envelope, as Fettle is completely confidential.

We will keep you updated by text message. We will send a text when your test kit has been dispatched to you and when the lab receives your samples.

We will text you your test results as soon as possible - always within 7 days. If you do have an infection, we will advise you of how to get treatment and further support.

If you have an infection, we will advise you how to get treatment and further support. In some cases, one of our clinicians may call you to offer additional advice.

If you receive a positive chlamydia test result from Fettle, we will offer you free treatment and deliver it by 1st class Royal Mail. Before we prescribe, you will need to complete a short online form, answering questions about you and your health history.

Typically, treatment will include a course of antibiotics, and may require you to attend a clinic in person.

Find your nearest sexual health clinic.

We will track your order and will text you when your order has been dispatched, when it has been delivered to your address and when your samples have been received by the lab.

The most common kit types are:

Genital Chlamydia and Gonorrhoea£26
Genital Chlamydia and Gonorrhoea, Syphilis and HIV£66
Genital, Oral and Rectal Chlamydia and Gonorrhoea, Syphilis and HIV£104

This price includes 1st class postage and packaging, pathology and clinical support and advice.

Regardless of whether you have an infection or not, only our clinicians and service managers will see your test results. All our staff sign a data protection agreement, similar to that used by NHS staff. Your results will never be shared with anyone else without your permission.

STI symptoms vary from obvious itchiness, soreness, rashes or redness, to pain when passing urine, discharge from the penis or vagina, and lumps or sores on the genitals. Some symptoms may also be internal - for example, pain inside your stomach or groin.

Sometimes you will get no symptoms at all or the symptoms will take a long time to show. This means you could be passing infections on to other people without knowing it.

The only way to know you have an infection is to have an STI test.

Find a local NHS clinic here.

are also many charities and support services that offer free, trusted and impartial advice on a variety of topics related to your health.