Doctor insights on:
Lyme A False Positive Elisa Test Result
A condition caused by borrelia burgdorferi. Acute symptoms can include bullseye rash, headaches, joint pain, fever, and flu-like sx. Chronic symptoms can include fibromyalgia symptoms, nerve pain in extremities, mood swings, brain fog, heart problems. Lab diagnoses are not very reliable, and sometimes clinical ...Read more
In my lyme disease panel the Elisa was positive, the western blot was negative. My doctor said Elisa false positives are common. Is this true and why?
Yes: The Western blot is a more direct measurement than Elisa. ...Read more
I have to take a ELISA test today for Lyme disease but I was just wondering how does ELISA test work?
Sandwich assay...yum: Elisa = enzyme-linked immuno sorbent assay. Done by adding serum from a subject to a plate w/antibody against the infection you're testing for on its surface. The antigen (or protein) from the infection binds to the antibody on the plate. Then another antibody to the infection w/color signal chemical attached is added on top and binds to the antigen. If infection is there color can be measured. ...Read more
What to do if I have to take a ELISA test today for Lyme disease but I was just wondering. 1. How does ELISA test work?
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 more
Western blot-positive band 41, ELISA-positive. LLMD says I have Lyme, MD is skeptical. Ok so do I start Lyme treatment or not? I'm torn.....
NO 41 K is only one: 41 K is very common — you need more band than that. Look at your lab report and discuss it with your physician. Some reports require 3 or 4 bands. ...Read more
I asked my doctor to test me for lyme. He did the ELISA and IgM tests. I was sick two years ago after being bit, would this show up on these (vs igg)?
How long do antibodies remain detectable in the blood? I had a clear ELISA for Lyme disease after recurring lightheadedness and brain fog after a possible bite when hiking in the uk but the test was a good 10 months later -would it still be reliable?
Last for years and some others (such as chicken pox) last a lifetime..... It is VERY unlikely that you had a Lyme exposure if the tests are negative in 10 months!
Hope this is helpful
Dr Z ...Read more
I had a perfect bulls eye rash on my upper arm 7 years ago, can a doctor treat you for Lyme without the testing? I had an ELISA test 4yrs ago. Neg.
Other possible cause: A "perfect bullseye rash" is highly likely to be lyme's. But bullseye rashes can be a symptom of another condition, like erythema multiforme. Check it out: <a href="http://en. Wikipedia. Org/wiki/erythema_multiforme" rel="nofollow" target="_blank">http://en. Wikipedia. Org/wiki/erythema_multiforme</a>. Good luck. ...Read more
With lyme disease you have ELISA and western blot but what if you tested ELISA negative is Lyme disease impossible? Or wise to do western blot?
Lyme blood test: In early Lyme Disease Elisa can be negative. No use testing Western Blot if Elisa is negative. Follow patient clinically and if symptoms of Lyme disease occur re-test Elisa. ...Read more
42 female, acute onset swelling/pain leg, knee, ankle, feet, wrist. Fatigue. Eosinophil level 760. Bit by tick 8 weeks ago. ELISA neg. For Lyme disease.
Must treat: This is very suspicious for Lyme. About 30% will never test positive for Lyme. You need a course of antibiotics ASAP. Lyme must be treated quickly, or else it becomes chronic and is much harder to treat. ...Read more
Yes.: The test can technically be done in less than an hour. However, time taken for blood draw, transportation to the lab and if the tests are batched, will all add time and it may take a day or so to get the results. ...Read more
Are the results of hiv elisa test effected by orlistat consumption during the past 6 months. Would it hamper antibody formation thus the test result.?
Need more details.: You will need to tell us the type of tests involving the ELISA technique. Either false positive or false negative may mean a lab error, borderline values, or test results not corresponding with the disease condition. Each test has its own pluses and minuses. ...Read more
Does a false positive ELISA HIV test mean someone has an autoimmune disease? Or could it be anything? Do people find out why they get these results?
No: While false positives can be from nothing specific, they can be related to infections from other viruses that may make similar antibodies that can react with elisas, but this has to be confirmed with western blot. I personally would ask for two confirmations as it can take up to six weeks for viral levels to be high enough to be sure with the test. Check with infectious disease doc to be safe. ...Read more
Abnormal: To say that a test is a false positive, signifies that your pap test was normal and incorrectly reported as abnormal. You should see your physician for clarification. ...Read more
Lupus biopsy: Biopsy of lupus has a number of features that lead to diagnosis: a thickened basement membrane, vacuolar alteration of basal keratinocytes and superficial and deep inflammatory infiltrate. Lupus has a number of different forms in the skin and there are times when it is not easy to differentiate it from other types of skin inflammation. There are other tests to support diagnosis. ...Read more
Complex: Hi. It's unlikely "stress" can give a false positive TSH elevation, but "stress" comes in multiple flavors. If a person is severely ill (usually ICU-tpye ill or at least hospitalized), an adaptive response (unfortunately) called "euthyroid sick syndrome" can show a TSH elevation in that range during a phase of the condition. Only in a case like that. Stress like a final exam next week? No. ...Read more
How likely would be a false positive test result of tyrosinuria in metabolic urine screening after 12 hours fasting? If indeed pos., what is the cause
Rare entity if true: This is a rare condition that can be treated with a low phenylalanine/tyrosine diet. Blurry vision could be related but unlikely. High cholesterol and triglycerides are probably unrelated. Tyrosinuria is a genetic disease most common in french canadians. Repeat test if marginally abnormal. ...Read more
It is recommended: That for best results on the h. pylori breath test that one avoid all antibiotics for two weeks prior to the test along with avoiding proton pump inhibitors, i.e. Prilosec and Nexium, etc. AND bismuth preparations such as Pepto Bismol. Hope this helps. Stay well:) ...Read more
All tests are subject to prior probability(the likelihood of a condition
before any tests) and a refined probability, modified by test results.
That being said the HIV eia test is among the most accurate in medicine, and when confirmed by a western blot, approaches 100%
Dr ted butler. ...Read more
HIV testing: This screening test has numerous biological false-positive results, but it is very sensitive without being specific. If positive it is followed by a western blot test which is highly specific. False negative results can be due to numerous causes but should not generally be a source of worry if other stds are also being tested for. ...Read more
Does false positive ELISA mean the person has autoimmune disease? Do people ever find out why they get these results?
Need more info: Elisa is an acronym for enzyme-linked immuno-sorbent assay. It is an immunological test that can be used for detection of various antibodies, antigens and certain chemicals. You don't mention what your elisa was positive to. Without that information I can't answer your question. ...Read more
No: It will not. An elisa needs to be confirmed by a more specific test. ...Read more