Hi,thanks for your question. Herpes blood testing is not done routinely as part of STI testing as the majority of people have been exposed to herpes and will have a positive result and the herpes blood test does not tell you where the herpes is on your body. If you have an area on your genitals that you are concerned is a herpes outbreak, then there is a swab that can be done to detect herpes and if herpes, what type of herpes it is. It is best to do this swab as soon as you see the area before it has healed up. To read more about herpes including testing, please see our updated resource at https://smartsexresource.com/topics/herpes-simplex-virus-genital-herpes To find an STI testing clinic near you, please see https://smartsexresource.com/get-tested/clinic-finder
Let us know if this does not answer your question or if you have any more questions or concerns.