Doctor insights on:
False Negative Herpes Blood Test
What are odds of false negative for herpes blood test if sexually inactive for a year but have some common symptoms? Test was. 63.
1 to 4:
25% of people in this country have herpes, but 90% don't know it.
False negative tests from labs these days is rare.
If you have herpes simplex I (2/3 are oral) then this is a very common problem -- cold sores.
If you have hsv ii (2/3 are genital), then you may have more prolonged/painful lesions that require valtrex/acyclovir treatment. Herpes is forever. This blood test tells you your history. ...Read more
There are different types of herpes infections; herpes simplex infection of mouth (gingivostomatitis) and lips (labialis) are the most common. Others include genital herpes, and herpes zoster. Herpes infection could very mild to very dangerous depending on the type and location of the body affected. I ...Read more
What is the likelihood of a false negative herpes type specific blood test with background of lupus (sle)?
About 0% to 9%: Quest diagnostics' website states that their herpes type-specific IgG antibody test is 91-100% sensitive, so there are a few false negative results. A repeat test can be done 4-6 weeks later, if worried about a false negative. Lupus should not affect the result, but if a person is on strong immuno-suppressive therapy, his antibody production may be blocked, which may make test results unreliable. ...Read more
What is the likelihood of false negative for g. Herpes using the herpeselect blood test if sexually inactive for over a year? Came back. 63. Thanks!
Low but possible: The herpes select blood test is a reasonably reliable test that will indicate if an individual has had heroes 1 or 11 infection. It is not perfect and there is a small risk it is false negative. Even with a negative test, condoms are indicated to reduce transmission of stds. ...Read more
Chances of having a false positive herpes type 1 blood test? 9.1 igg. While other STDs remain negative 0.0 igg. Had my test 2 weeks later after exposure.
True positive, but: As pointed out, many adults are positive for Herpes simplex type 1 by adolescence. New IgG antibodies usually ae being produced by day 10 after exposure, may not be detectable until 3 weeks, occasionally later. Particularly diseases such as syphilis and HIV may not be positive at 2 weeks. You should be retested at 4 weeks. HIV ...Read more
Can lupus give you a false negative pregnancy blood test? I have all the symptoms of pregnancy and no uti.
Not aware of: Lupus is not expected to interfere with pregnancy test. ...Read more
If I had a negative herpes blood test at three weeks and seven weeks is it possible I still could have hsv-1?
Sure: If you just caught it after the last blood test, you would have herpes-1 now, but a negative last blood test. Herpes-1 is commonly found in people by the time they become adults. It is common enough that it is considered normal to have herpes-1 oral herpes. Usually, there is not a reason to repeated tests for herpes-1 unless a person is worried about catching it on his genitals via oral sex. ...Read more
How assuring is a negative herpes blood test for both HSV-1 and HSV-2, at 3 months after exposure? Do you suggest more testing to be conclusive?
Very reassuring: It very reassuring, but you could check again at 6 months to confirm. ...Read more
Small hole-like cut under vag entrance it doesn't hurt to touch nor burn when I pee, & isn't irritated + negative herpes blood test. What could this be?
Need for examination: It is not feasible to provide a meaningful opinion without examining the lesion. Please consult your doctor. ...Read more
Not exactly: It is not so much the blood test is wrong, as it might be too early after infection to show up. Culture only positive if "catches" the organism to grow. There are a couple of types of herpes (hsv1/hsv2) as well. Usual to repeat blood work after 3-6 months if equivocal results. ...Read more
Not really: The labs aren't 100% sensitive or specific. But if neither partner has had symptoms, there's no reason to believe the couple is infected. Wondering why you ask. Best wishes. ...Read more
Herpes simplex: You need to see a doctor. Have no idea without seeing these outbreaks what they may be. ...Read more
My friend got a blood test for herpes and it came back negative. She has never had any break outs. It is still possible that she could have herpes?
Can you get a false positive herpes test if it's by swob? Should you get a blood test to know for a fact? And can folliculitis be mistaken for herpes?
False pos very rare: False positive tests for herpes simplex virus (HSV) (culture or PCR) are extremely rare and you probably don't need a blood test. However, a blood test still may be useful, e.g. to help tell new herpes from a recurrent outbreak, or if for some reason the virus type (HSV1 or 2) wasn't determined from the swab test. Folliculitis and herpes can be confused, but rarely by an experienced clinician. ...Read more
Should a blood test for herpes be positive once I took the aciclovir, or it can be negative after aciclovir?
IgG stays positive: The blood test we check for herpes infection is typically igg and igm tests. Igg remains positive for life, as long as there is an exposure, regardless of whether or not you've been treated. Igm is a measure of an acute (current) exposure, and will reduce if not currently active. ...Read more
Is it possible to have a false positive on a herpes test? And do you know how long its suppose to take for the blood test results to come back?
False pos can occur: The standard blood tests for herpes simplex virus (HSV) are not perfect; false positive results can occur. The strength of the result -- i.e. the optical density ratio (also called ELISA ratio) -- is important in distinguishing true positive from false psotive results. Results usually are available in 2-5 days, but it varies a lot from one lab to another. ...Read more
I'm curious to know what are the chances of receiving a false positive on a blood test for herpes or any std?
Let me explain:
No diagnostic test is perfect, but the test of std diseases are very good, rarely you get either false poivtive or flase negative.
It depends not only on the test but on the population it is used in. ...Read more
Do I infect other if I tested for herpes blood test IgG positive 158 and IgM negative 0.08? And what negative IgG means? Thank you
I had herpes blood test 1&2 IgG positive 158 IgM negative 0.08 they told me I don't have herpes are they correct? I'm so confused please help me
Yes: They are correct. Igm tells us if you have an acute or active infection. This was negative, so you do not. The igg tells us you have previously been exposed or infected. This was positive, so you have. ...Read more
Blood test results say herpes ab type 1 iGg: 0.10 and herpes type 2 igg: 0.23 if I'm negative why aren't the numbers 0 why are they 0.10 and 0.23?
Is the herpeselect IGG blood test conclusive after 3 months of sexual encounter? Is a negative blood test reliable? Should another blood test be taken at 6 months post encounter to be extra sure? I tested negative for both types of herpes at 3 months.
If you were: Tested because of suspicious lesions you should have a follow up test. If your sexual partner is positive for HSV you are at risk of contracting the virus with each encounter. Many partners go years without becoming positve. Antiviral medication prophylaxis for the infected partner reduces the negative partners risk but not to zero. Condoms also reduce risk. Be healthy- your immune system is impt. ...Read more
Docs swabbed for herpes but is the blood test more accurate? Can a swab come back negative when someone is indeed infected w/the virus?
Not 100%: Neither the swab nor the serum antibody assays are altogether reliable. Both must be correlated with the clinical picture and any decision on treatment must take into consideration the known uncertainties. The same is true of most other life situations -- in a world full of uncertainty, love safely but love well. ...Read more
If I had a positive IgG herpes blood test but never had Symptoms Why would the doctor tell me it is probably a false positive? Did he cross reference?
It depends...: This depends on details you don't mention. If definitely positive (e.g., if you had a HerpeSelect IgG test and the HSV2 value is 3.5 or higher), it's not false positive: you are infected with HSV2. Lower numbers can be false positive, however. For HSV1, false positive are very rare; if positive, you're infected. ...Read more
I got a swab to test for herpes and it was negative. And a blood test showed that I have high HSV antibodies, do I have herpes?
I get a tiny cut on my perineum semi often. Blood test done for herpes, negative. No itching, stings faintly if I find one & keep touching it. Ideas?
Tiny cut: If you are sexually active it could be a tear from insertion of the penis into your vagina. Try using a generous amount of lubrication to ease this process. ...Read more