 [ Symptoms ] how soon can the blood test detect if you have genital herpes if you get the blood test after you have had unprotected sex with someone who has herpes and it comes back negative is there still a chance you can have the herpes virus [ Disease ] hi if you have just done a gallbladder flush if you wanted to see them you need to use a sieve when you go and if like me you really did go to be honest i was not that worried but it worked for me good luck