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Guides Changing treatment and drug resistance

Viral load tests

A viral load test is the most sensitive test to check whether a combination is still working.

After any treatment change, viral load should be checked every 2-4 weeks until it becomes undetectable.

Once viral load is undetectable you should be monitored with a viral load test every 3—4 months.

For more information on viral load see:


February 2011

Decisions relating to your treatment should always be taken in consultation with your doctor. Information in this guide is intended to support those discussions.

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