Is there a bliod test you can take to tell if you have the herpes virus?

Tests available: The herpes virus comes in 2 types: herpes simplex (hsv) 1&2. Antibodies (igg) to both viruses can be tested to see if you have lasting immunity and (igm) short-term antibodies check to see if you have had a recent infection. Unfortunately the igg levels can not tell how long ago you were exposed. Also herpes 1 & 2 viruses can cause either oral or genital herpes. Hope that helps.

Yes: The blood test will tell if you have ever been infected with herpes simplex type 1 or type 2. If the tests are negative (and at least 6 weeks have gone by since a suspected infection for the antibody to be made) then you do not have herpes simplex infection. If either of them are positive it means you have been exposed in the past, but does not prove that the suspected infection is due to herpes.