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Having an HIV test is the only way to know for sure whether you have HIV. Symptoms aren't a reliable way to tell if you have HIV or not.

If you have HIV, it’s very important that it’s diagnosed. This will give you the best chance of getting the treatment and care you need to stay well.

Usually, when you go for an HIV test, you will have an opportunity to talk to someone first, so you can ask any questions you might have. The person doing the test will explain how the test works and how you will get the results.

Angelina Namiba talks about the importance of testing for HIV.

Then, depending on the type of test, you have a small sample of blood taken from your arm, or a drop of blood taken from your finger. Some tests are performed using fluid from around your gums.

If the test says you are HIV positive, this means you have HIV. If the test says you are HIV negative, this means you do not have HIV. With some tests, you will need to have a follow-up test if you have a positive result.

In many countries, including the UK, HIV testing is free and confidential.

Click here to find out more about HIV testing.

Roger Pebody

Roger Pebody

Commissioning Editor

Roger joined aidsmap in 2008 and was Managing Editor from 2018 to 2024. As a freelancer, he now edits aidsmap’s news and conference coverage, as well as working on updates to About HIV pages. He is also a contributing science editor for TheBodyPro, a freelance journalist for The Lancet HIV, and a medical writer helping researchers prepare articles for peer-reviewed journals. He began working on HIV at Gay Men Fighting AIDS in the mid-1990s.

Basic information

Better off knowing

Better off knowing

Testing

Testing basics leaflet.

What are the symptoms of HIV?

Domizia Salusest | www.domiziasalusest.com

Where can I get an HIV test?

A person having a blood test. They are sitting in a chair while a nurse collects blood in a vial.

What is the difference between HIV and AIDS?

Illustration of HIV virus.

Very recent infection

Very recent infection

Myths and facts

Myths and facts

What does ‘reactive’ mean when testing for HIV?

A close-up of a glass receptacle which contains a testing vial. This vial is labelled as being ready to receive blood for an HIV test. The image has a pink and purple filter over it. The image has a pink and purple filter over it.

What does ‘non-reactive’ mean when testing for HIV?

A close-up image of somebody holding an HIV test between two of their fingers. The test has not been taken yet and is blank. The person is wearing blue surgical gloves. The image has a pink and purple filter over it.

What does ‘indeterminate’ mean when testing for HIV?

Mareike Günsche | www.aspect-us.com

What does undetectable mean?

HIV testing

A close-up of a glass receptacle which contains a testing vial. This vial is labelled as being ready to receive blood for an HIV test. The image has a pink and purple filter over it. The image has a pink and purple filter over it.

Home HIV testing (self-testing and self-sampling)

A man pricks his finger so that he can test himself for HIV. In front of him are the instructions for the test. He is concentrating on pricking his finger. The image has a pink and purple filter over it.

HIV testing for trans and non-binary people

Mareike Günsche | www.aspect-us.com

Early HIV infection

A woman site on the sofa with a blanket over her and around her shoulders.

What are the symptoms of early HIV infection?

A woman is resting in bed.

What is the window period for HIV testing?

A person wearing a surgical glove holds the hand of somebody else. This person is having their finger pricked with a fine needle. The needle has drawn a small amount of blood which is visible. The image has a pink and purple filter over it.

Sensitivity and specificity of HIV tests

A close-up of somebody's hand. They are wearing blue surgical gloves and holding a vial that contains a small amount of blood. The image has a pink and purple filter over it.

False positive results on HIV tests

An empty vial marked with the word "HIV" resting in a test tube. The image has a pink and purple filter on it.

False negative results on HIV tests

A person wearing a surgical glove holds the hand of somebody else. This person is having their finger pricked with a fine needle. The needle has drawn a small amount of blood which is visible. The image has a pink and purple filter over it.