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NAM exists to support the fight against HIV & AIDS with independent, accurate accessible and comprehensive information. We aim to create and disseminate information resources rooted in the experience of those most affected, enabling individuals and communities to take action and control in responding to HIV & AIDS.

Testing & health monitoring

Information about both the tests that are used to diagnose HIV and those used to monitor the health of people living with HIV, including viral load and CD4 counts.

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Basic information

How do I know if I have HIV?

Where can I get an HIV test?

What does an HIV test involve?

Better off knowing

Testing

What does ‘reactive’ mean when testing for HIV?

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

What does ‘indeterminate’ mean when testing for HIV?

What is p24 antigen?

CD4 and viral load

Undetectable viral load

Health checks

Find a free HIV test near you

European test finder

HIV testing

Home HIV testing

What is the window period for HIV testing?

Sensitivity and specificity

Are HIV tests accurate in people taking HIV treatment, PrEP or PEP?

How accurate are fourth-generation combination tests for HIV diagnosis?

How accurate are rapid, point-of-care tests for HIV?

How accurate are self-sampling kits for HIV?

How accurate is self-testing for HIV?

False positive results on HIV tests

False negative results on HIV tests

CD4 cell counts

CD4/CD8 ratio

Viral load

What are logs in viral load results?

Blood tests before starting or changing HIV treatment

Other blood tests

Blood problems and HIV

Other topics

Recently diagnosed with HIV

HIV treatment

How HIV works

Transmission & prevention

PrEP

Sexual health

Families & children

Health problems & ageing

Healthy living

Hepatitis & HIV

Tuberculosis & HIV

Social & legal issues

Health services & systems

Glossary

About us

NAM is a charity based in the United Kingdom. We work to change lives by sharing information about HIV & AIDS. We believe independent, clear and accurate information is vital in the fight against HIV & AIDS.

Our information is intended to support, rather than replace, consultation with a healthcare professional. Talk to your doctor or another member of your healthcare team for advice tailored to your situation.

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Visit NAM’s other websites: clinic.nam.org.uk | infohep.org | prepineurope.org | about-hiv.info | pro-vich.info

© NAM Publications 2019, all rights reserved. NAM is not responsible for the content of external websites.

Company limited by guarantee. Registered in England & Wales, number: 2707596. Registered charity, number: 1011220

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