PrEP Test Kits
Buy PrEP test kits online to begin or continue PrEP treatment and get free home delivery.
Prices from £24.99
Order your test kit, then take and send your sample to our UK accredited partner laboratory. Get results and advice from our doctors in 2 to 3 days.
PrEP (pre-exposure prophylaxis) is a medication that can lower your chances of getting infected with HIV, if you have a higher risk. You need to take certain tests to be prescribed PrEP. You can order any PrEP test kits you need through ZAVA.
Before taking PrEP
Before we can prescribe PrEP to you, we’ll ask you whether you've had a:
- negative HIV test result
- normal kidney function (creatinine and estimated Glomerular Filtration Rate; eGFR) test result
- negative hepatitis B and C test result — you only need a negative hepatitis B result if you’ve not had a hepatitis B vaccination, and you only need a negative hepatitis C result if you are a man who has sex with other men or are a trans woman
We offer 2 introduction test kits. Order our:
- basic PrEP test to check your HIV status and kidney function only, if you know your hepatitis status or have had a hepatitis B vaccination already
- comprehensive PrEP test* to check all the above (HIV status, kidney function, and hepatitis B and C status)
While taking PrEP
If you’re already using PrEP, you need to take regular tests to check that treatment is still suitable. We will ask you about these tests whenever you order PrEP medication through us.
Every 3 months, you need a:
- negative HIV test result only
Once a year, you need a:
- negative HIV test result
- normal kidney function test result — if you’re over 40 years old or have a high risk of kidney disease, you should check this every 6 months instead
- negative hepatitis B and C test result
We offer 2 continuation test kits depending on which stage you’re at and the tests you need. Order our:
- 3 month continuation PrEP test to check your HIV status and kidney function only
- annual continuation PrEP test* to check all the above (HIV status, kidney function, and hepatitis B and C status)
We also offer standalone HIV tests and kidney function tests.
*Important: If you have a hepatitis B vaccination, you should wait 8 weeks before taking a hepatitis B test. You may get a false positive result if you take this sooner.
STI screening (optional)
It's also recommended that you do a full screen to check for STIs (sexually transmitted infections), both before and while taking PrEP.
We offer the following STI screening kits:
- men who have sex with men STI screen — men who only have sex with women can use this too, but they don't need to provide an anal swab sample
- women's STI screen
- extended STI kit — both men and women can use this
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Before you can start taking PrEP, you need to make sure you:
- are HIV negative
- have normal kidney function
- are hepatitis B and C negative
We offer a comprehensive PrEP test kit which checks all of these, and a basic PrEP test kit which checks HIV status and kidney function only.
When your test kit arrives, take a simple blood sample at home then send this to our partner laboratory for analysis. Your kit will come with full instructions to complete your test correctly. See more details about collecting your blood sample, below.
Once you begin using PrEP, you must continue to take these tests to check that PrEP is still suitable for you. You can order any continuation test kits or standalone test kits you need from us.
A PrEP test might not detect HIV if you have caught the infection within the last 6 weeks. If you’re concerned that you’ve caught HIV recently, we recommend waiting 6 weeks before taking your PrEP test. For example, if you’ve had unprotected sex with someone whose HIV status you do not know.
If you think you’ve been exposed to HIV in the last 72 hours, visit your local sexual health clinic straight away. You may need to start taking PEP (post-exposure prophylaxis).
If you’ve recently received a hepatitis B vaccination, you should wait 8 weeks before taking any hepatitis B test such as our comprehensive introduction or annual continuation PrEP tests. Taking these sooner may lead to a false positive result.
We cannot prescribe PrEP if you test positive for HIV.
All positive results must be followed up by another test using different technology.
Our doctors are on hand to support you if your HIV test result comes back positive. One of our doctors will discuss your situation with you in detail. This includes helping you find specialist care in your local area and putting you in touch with local support groups.
Why is it important to be HIV negative before and during PrEP therapy?
It may be unsafe to take PrEP if you’re HIV positive. PrEP contains 2 different antiviral drugs which are often used to treat people with HIV (alongside other medications). You can become resistant to these drugs if you use them when you’re already HIV positive. This can make it more challenging to treat the infection later on. PreP medication is not a treatment for HIV and is for pre-exposure prohylaxis only.
We cannot prescribe PrEP if you test positive for hepatitis B or C. You will need to make an appointment with your GP. They may refer you to a liver specialist.
If your results show that you have abnormal kidney function, we will ask you to do another test to see if it normalises. While we can do this repeat test for you, we recommend that you visit your GP for this test. They may want to do further testing or examine you in person.
If any of your results require further testing, you will not be able to take PrEP until your results confirm you can do so.
When you get your test kit, it will contain all the information you need to collect your blood sample correctly.
If you have any problems while taking your test or you make a mistake, we can send you a new test free of charge.
Your test kit will contain:
- 3 lancets to prick the skin to collect your blood sample
- a collection tube
- a plaster
- a wallet
- a prepaid envelope to send your sample to our partner lab
You can collect your sample at any time of day. Have some clean tissues nearby before you do this.
Steps to collect your sample
- Clean your hands with warm water and soap. It’s easier to collect your sample if your hands are warm. Dry your hands thoroughly.
- Take one of the swabs and wipe the fingertip you’d like to collect your sample from. We recommend that you avoid using a finger you write with. Wait until your fingertip is completely dry.
- Twist the cap and remove the purple stick from one of the lancets. Place this on the middle of your fingertip. Press the purple button to prick your finger.
- You should see a drop of blood start to form on your fingertip. If this doesn’t happen, try this again on a different finger using one of the extra lancets.
- Take a tissue and use it to wipe the first drop of blood away. Then place the collection tube upright in the groove of the plastic container on a flat surface. This will make it easier to collect your sample as you may need both hands to do this.
- Point your finger down over the collection tube. Squeeze each side of your fingertip so that drops of blood fall into the collection tube. Do this until the tube is filled to the top line. If there’s not enough blood to fill the tube, use one of the extra lancets on a different finger and repeat the first steps.
- When you’ve finished, cover your fingertip with the plaster.
- Place the lid back on the collection tube. Make sure it’s screwed on tightly.
- Write your details on the sticky label and stick this to the collection tube.
- Place the tube into the wallet, then place this into the prepaid envelope.
- Post the sample to our partner lab.
You’ll get your results with advice from our doctors within 2 to 3 days of your sample arriving at our partner lab. You’ll get an email to tell you when this is ready to view in your secure account.
Your results will tell you whether you can start taking PrEP. If you can, you can order PrEP straight away.
If you cannot take PrEP, this means you’ve tested positive for either HIV, reduced kidney function, or hepatitis B or C. Our doctors will explain your results to you and give advice about what you should do next. All positive HIV results must be followed by a 2nd confirmation test.
You can also book a follow up telephone consultation with one of our doctors.
Dr Babak Ashrafi Clinical Lead for Service Expansion
Babak studied medicine at King’s College London and graduated in 2003, having also gained a bachelor’s degree in Physiology during his time there. He completed his general practice (GP) training in East London, where he worked for a number of years as a partner at a large inner-city GP practice. He completed the Royal College of GPs membership exam in 2007.Meet our doctors
Last reviewed: 25 Apr 2022
HIV and AIDS, Diagnosis, National Health Service [accessed February 2023]
Hepatitis, National Health Service [accessed February 2023]
PrEP, Solent NHS Trust [accessed February 2023]
Kidney Testing: Everything You Need to Know, Center for Disease Control and Prevention [accessed February 2023]
What does a positive HIV result mean? Center for Disease Control and Prevention [accessed February 2023]