Doctor insights on:
Positive Tilt Table Test Results
Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?
True or False Test?: A "false negative" test means the presence of a "confounding variable" that invalidates the test because it nullifies a test that would probably be positive if the variable were absent, like a brochodilator medicine (e.g.various inhalers and pills for asthma). So the test should be done in the absence of those medications, if possible-or-used as a validation as to the medication's effectiveness. ...Read moreSee 1 more doctor answer
3 hep c antibody screen tests done. First low positive, 2nd two neg. thoughts? Could the two negatives be false negatives?
My lab tests came back with a positive ANA and a positive rnp antibodies...Is this considered abnormal readings?
Yes: You need to see a rheumatogist.Get a more detailed answer ›
How accurate is blood work to check for pregnancy? Had 3 home pregnancies test positive, & test in clinic negative. Waiting for blood work results.
HSV 1 positive through blood test =[LIAISON assay using chemiluminescence immunoassay (CLIA) tech.] Index=1.47, how likely is it false positive?
What tests did they do?
-rpr, rfx qn rpr/confirm tp-pa
value (normal range
non reactive (non reactive
Erosive gastritis. h.pylori blood test positive, breath test positive, stool antigen test negative, biopsy negative. what to do ?
Treat it: The positive H. pylori antibody test is not a reliable indicator of current infection. The gold standard for H. pylori treatment is the gastric biopsy, and this is negative in this patient. However, I am impressed by the positive breath test and erosive gastritis. I would have expected stool antigen to be positive, as it mirrors the breath test. Given the discrepant results, treat the patient. ...Read more
Misinformed?: Who told you that your hep c test was false? If you have no viral load that means you cleared an infection. Are you sure you are getting the right advice? ...Read more
No risk factors for TB. 9 weeks pregnant, had QFT blood test for TB. Results came back positive. Can this test show false positive? What's next?Scared
False positive test: Yes you can have what is called a "false positive test." This means that at one point you where exposed to TB, you where in close contact with someone. The usual next step is to have a chest X-Ray to see if you have TB in your lungs. A false positive test is quite common and nothing need to be done. Please follow up with your doctor. ...Read moreSee 2 more doctor answers
I tested positive/treated for strep 5x (rsat), little/no symptoms. Last test was positive, culture was negative. What causes false positive results?
Latent infection?: Some people have recurrent MRSA (multiply-resistant strep aureus) infections that are treated successfully and recur. There is a possibility that they (or you) could be harboring strep in your nose. The sinuses don't have great blood flow, and so may potentially "hide" bacteria. This could explain your odd results. Put bactroban (mupirocin) up your nose daily as a preventive measure, and see what happens. ...Read moreSee 1 more doctor answer
False positive hep c antibody tests? I have had 2 positive tests 1.04, 1.15 and one negative test. Also 2 negative PCR tests, 18 wks after needle stic
Hep C unlikely: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, give than Hep C pcr test was negative at 18 weeks after exposure, it is unlikely that you have Hep C infection. ...Read more
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