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What Can Cause A False Positive Tb Test
Mycobacterium tuberculosis is an infectious organism that spreads by droplets coughed out by an infected person. Infection is established initially in lungs, but can spread within lungs & to other body parts, or can become latent, with reactivation occurring years to decades later. With effective treatment, it can be completely eliminated although drug resistant ...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
Big cause: is letting it sit out and reading it much later than it should have been read. ...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
Errors: Be honest and offer to even pay for a better test. This seems to happen to people - so it may not surprise them. Read: http://ehealthforum.com/health/false-positive-in-urine-test-for-fentanyl-t292331.html Best! ...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
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
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
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
No: There is no evidence to conclude that. ...Read more
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