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Negative Western Blot Lyme
Then it's not Lyme: Lyme disease can be tricky -and you want to make sure you see someone like an Infectious Diseases doctor who knows how to treat it. The diagnosis is actually based on clinical findings, and the lab testing is generally 'supportive'. Since you're Western blot is negative, then it's very unlikely you have Lyme. There are other diseases that could cause 'Lyme-like' symptoms -and good to get evaluated ...Read more
Western blot igm bands 23 and 41 were positive but second testing weeks later showed completely negative western blot. False positive?
Not enough data LYME: This is not enough data to diagnose Lyme.It can occur in other conditions and these tests can change. ...Read more
Tested false positive ELISA HIV test last month. Negative ifa and western blot and naat. 2 negative oraquick all 1 1/2 year post exposure. Hiv?
Yes: There are 2 reasons for this kind of result: (1) a false positive, or (2) early infection before seroconversion. In someone at low risk for HIV without symptoms, another negative WB in 1 month means there's no infection. In someone at risk or with symptoms of acute infection, a viral load can be helpful. The new 4th generation antigen/antibody tests will eliminate this problem. ...Read more
2009- ELISA HIV test- positive, western blot- neg. 2010-oraquick negative. 2014- elisa-indeterminate wb- neg. Low risk for hiv. Could I have lupus?
Not a test for lupus: The HIV test is not a test for lupus. What's clear is that you don't have hiv. You'll never know why your elisa was positive and then indeterminate, and it's not worth investigating. False positive elisas are not uncommon; that's why they have to be confirmed with western blot. ...Read more
High disease area?: The Western Blot is the 2nd (after the ELISA) in a 2-step process. An individual in an area where Lyme disease is common & with high exposure to Lyme-disease carrying tick bite who has been bitten by an engorged tick is highly likely to have Lyme disease if these tests are positive. Without these risk factors, a positive test could be falsely positive. ...Read moreSee 1 more doctor answer
Does the western blot trump the elisa? Tested positive via ELISA IgG for hsv2,but later tested negative via western blot. No symptoms. Do I have hsv2?
Western blot more: specific, ELISA more sensitive. One positive ELISA and one negative Western blot says that you do not have enough antibodies to HSV 2 for confirmation of diagnosis. It may be prudent to repeat the tests in 3-4 months to make sure that negative Western blot was not due to incomplete/early immune response. ...Read more
Yes!: No lab test is perfect, including the westen blot for lyme. There is an approximately 4% chance of a positive being a "false positive" test. There is also an approximately 20% chance of false negatives, someone with lyme not having a positive western blot. This is why lyme is ultimately a clinical diagnosis, with labs used to support a diagnosis. Other tests may also be useful. Please see comment:. ...Read more
2 false pos ELISA HIV tests, all 1 1/2 years post exposure. Neg western blot, ifa, naat and 2 neg oraquick home tests. What is my HIV status? Help!
Likely negative: There is typically a "window" of 3-6 months after exposure where you could be HIV positive but test negative. Since you didn't get your testing until well after that, i'd say the confirmatory tests (western blot, ifa) are what you should go by. The elisa is very sensitive and can have false positives- that's why we rely on the confirmatory tests. I would consider your status to be negative. ...Read more
Postive Elisa test,positive band 41 western blot positive Ana antibodies- soar throat and extreme fatigue after eating ANYTHING- autoimmune disease?
what is difference between IgM and IgG for western blot for lyme. positive for IgM but not IgG, what does that mean? tks
Recent infection: Hi. IgM is present only with recent infection. After IgM levels fall away, IgG takes over for ongoing and recurrent exposure to antigen. (The antibodies in this picture are IgG's). I'm glad your doc was on the ball. She/he may have saved you a world of hurt by making the diagnosis promptly. Good luck! ...Read more
Are Lyme tests Elisa & western blot actually unreliable half the time like holistic/naturopath doctors or LLMD's say?
Not true: Naturopaths spend a great deal of time and effort promoting themselves by debunking conventional medicine. But who do you think they go to when they are sick? The tests you mention are mostly reliable but there is a small margin of error for any tests. To say these are unreliable at the 50% level is marketing and untrue. ...Read moreSee 2 more doctor answers
Along with: confirmatory western blot and viral load.Get a more detailed answer ›
No: If positive, it will be followed up with a confirmatory test. If negative, you are almost certainly okay but if you are very worried you might be able to pay for a pcr assay, which is the gold standard. ...Read more
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