Testing for Herpes

In order to confirm genital herpes, it is necessary to prove the presence of HSV-1 or HSV-2.

Laboratory confirmation

The usual procedure is for the clinician to take a swab from the area affected. A sample of the fluid from a blister or from ulcers is taken and sent away for analysis. The test can identify whether the virus infection is caused by HSV-1 or HSV-2.

Blood tests

Commercial blood tests and over the counter testing kits specific for HSV-1 and HSV-2 antibodies are available but are not recommended for use in the general population as a routine screen. The blood test has many limitations and doesn't necessarily provide information that is helpful in management of the infection. The time taken to develop antibodies is usually 2-6 weeks after infection, but it may be up to 6 months and flase positives and false negatives can occur in these tests. The blood test is also unable to tell you the site of the infection, or how long you have had HSV for. Multiple studies have concluded that blood serology for screening causes more harm than good.