[Question #12359] herpes status after negative tests

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8 months ago
Hello! I have what I think is an unusual situation.  In 2003, I was diagnosed with genital herpes by my gp. I think they swabbed a lesion but I don't remember. It was twenty years ago. I do remember a phone call from the doctor telling me I was positive. That doctor's office is no longer open and the records are not available. My partner and future wife had herpes (she had blood work that confirmed this) so I did not question the diagnosis and I took Valtrex intermittingly when I thought I was having an outbreak. My wife and I divorced last year and this spring I went to get an STD test from a clinic which came back negative for HSV 1 and 2. I retested five weeks later, which was also negative.  My GP ordered a new blood test at a hospital which was also negative and told me that the original diagnosis must have been inaccurate.  She said that my "outbreaks" of one or two pimple like bumps were probably folliculitis. I had one bump swabbed and it came back negative. I tested one more time when I started having sex with a new partner, which was also negative. I understand that herpes is surrounded by cultural stigma, however I also want to practice safe sex. I am otherwise healthy. I also want to stay off Dr. Google which has inconclusive things to say about IGG blood tests. With these contradictory testing results (and the fuzziness of memory), should I get a Western blot/DNA test and if so, should I contact an infectious disease specialist or urologist? Thanks!
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8 months ago
Hello.  I am just following up with a reply to make sure that my question wasn't overlooked.  Thank you!
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Terri Warren, RN, Nurse Practitioner
8 months ago
Sorry, we are out of the country and my responses are a bit delayed
Too bad you don't recall if the diagnosis was made by swab or blood antibody test.  The swab should probably be relied upon, but the blood test can have both false positives and negatives.  The western blot is considered the gold standard, done at the University of Washington only in the US.  You can work with your own provider to get this done or I can help you at westoverheights.com.  You'll need to order the kit - 206-685-6066 - to do this test, so you can get started on this right away.  I think it is your best bet for an accurate answer to whether you have HSV or not.

Terri
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8 months ago
Thank you. Do you know why, and for that matter how often, IgG tests produce false negatives multiple times?
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Terri Warren, RN, Nurse Practitioner
8 months ago
It is due to the inability of the test to accurate identify and pick up HSV antibody proteins.  Sometimes it picks up other proteins and says they are herpetic and other times, because it relies on picking up a single antibody protein to identify infection, it misses it.  The western blot looks for all 16 antibody proteins and 4 must be present to be called positive, so it is much better.

Terri
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8 months ago
Thank you for the information about the test.  My question is why would the IgG tests miss the antibody protein in an individual? Is it that the antibody was never produced or something else? I'm also curious about how to convince my provider/gp to order further tests. 
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Terri Warren, RN, Nurse Practitioner
8 months ago
It is more likely that it is a function of the test, because we know the IgG misses 8% of HSV 2 but these same infections are picked up by the western blot, which is also an antibody test.  So we know these people have antibody.  
I would suggest you print out the CDC guidelines that describe false positives on IgG tests.  There are also papers on how much the IgG test misses that you can find on PubMD.  I'm an author on one of these papers so you can search Warren T and the word herpes.

Terri
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