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What Can Cause A False Negative Hiv Test
Hiv infection is caused by a retrovirus....This retrovirus binds to CD4 cells (for the most part). You may detect the virus by several different methods. An elisa test (enzyme linked immunosorbent assay). You may also detect it by doing a test referred to as a western blot (a gel protein electrophoresis). Thirdly by pcr (polymerase chain reaction) which ...Read more
It's just random: Tests miss 5-10% of infections, more by urine, less by urethral or vaginal swab. Maybe other possibilities as well. Chlamydia clears on its own in a few weeks to months, so current testing is negative. Or s/he received an antibiotic for chlamydia (and didn't admit it) or for another infection, curing chlamydia or interfering with the test. Partner(s) of infected person need Rx, even w/ neg tests. ...Read more
See below: The test is past its expiration date; you took the test the wrong way; you tested too soon; your urine is too diluted because you consumed large amounts of fluid right before the test; you are taking certain medications, such as diuretics or antihistaminics. If you are still concerned you may see your doctor for a blood test. http://www.webmd.com/baby/guide/pregnancy-tests. ...Read more
Maybe but unlikely..: Timing can be important in HIV testing. If testing is conducted within a very short time of possible exposure, then it is possible for a false negative result. In general, current HIV tests are highly accurate. If you are concerned, then a retest may help. It would be good to discuss your exact situation and dates of exposure and testing with a doc or at a clinic where testing is performed. ...Read more
Big cause: is letting it sit out and reading it much later than it should have been read. ...Read more
Lyme disease and...: False positives for this test are extremely common. See http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6005a1.htm There are many possible causes- see http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2095002/table/T4/ for a list. I would be particularly concerned about Lyme disease causing a false positive and advise a Western Blot from IgeneX lab. See http://betterhealthguy.com/lyme/testing ...Read more
Time and technique: Testing too early, using dilute urine or not following the testing direction can produce a false negative result. If you have any concern, you may repeat the test with first morning urine, 4-5 days after a missed period and follow the directions carefully. You may also get a blood test through your doctor. ...Read more
Hypothyroidism is not expected to cause a false positive pregnancy test. If you have any concern, get a blood test for HCG level.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.
Get HPV vaccine ...Read more
Can having syphilis cause a negative hiv eia antibody blood test be inaccurate. What can cause false negatives. Its been about 12 years since event.
You've asked before: I recognize you as having asked variations on this question frequently. Something happened twelve years ago and you seem obsessed with the idea that you have a false-negative HIV test. At this point, I think you realize that these fears are unrealistic, and they're holding you back from enjoying the rich, happy life that should be yours. Your physician can guide you in overcoming these. Best wishs ...Read more
The typical reason: is that the urine metabolite was below the "cutoff" levels for the screening which would not then be subjected to confirmation. It is not that barbituates were not in the sample, but that they were below the "positive" quantitative level for confirmation. Barbiturates are not on federally mandated testing so the cutoff level is arbitrarily assigned. ...Read more
There are several ways to detect the HIV virus. The first is by antibodies. This includes eia (enzyme immuno assay). The rapid HIV tests are these types. The second way detects proteins on the viral coat (western blot). This is a gel plate electrophoresis. Thirdly there is pcr (polymerase chain reaction). This detects and amplifies dna allowing a viral ...Read more
Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (aids),  a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections ...Read more
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