Does simplex herpes show up on blood tests? and what is simplex herpes?

Herpes: Herpes simplex is the virus known as herpes. Found worldwide, it is a permanent resident in humans which have been infected. Some studies show antibodies in up to 50% of the young and 90% in adults in developing nations, with 20 to 50 % in developed countries.. Viruses don't "show up" on a routine "blood test", although more sophisticated tests rarely used, can be used to measure antibodies to it.