Doctor insights on:
Positive Skin Test
Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?
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
Hepb surface antigen positive, confirmatory test negative, antibody and core negative, should I worry?
Possibly: Do not understand how initial test was positive and "confirmatory" test negative. Need to repeat these, although you may be in the "window" period, when antigen is being consumed by forming antibody and neither is measurable. Wait 3 months and retest antibody titers. By then you may be hepb antibody and core antibody positive, in which case you are immune. ...Read more
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
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
5 positive home pregnancy test 2 different brands negative blood test still getting a positive in home test lines very slowly getting darker ?
Blood test for HCG: Given the discrepant results with hpt, it would be useful to see your doctor and get a blood test for HCG levels, it is more sensitive and specific than hpt. Alternatively could wait 4-5 days to repeat hpt. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine. ...Read more
I took 7 home pregnancy test all positive but doctor test say negative and blood test was negative why?
Please clarify: Perhaps the reason can be known when you tell us honestly why you kept testing at home even though the test told you a positive answer. Something must have clued you into the fact something was not normal. You tell us. ...Read more
Tb skin test negative, quentform TB test negative, bone marrow biopsy results indicative of TB (reacts to ziehl niehlssen), PCR negative. How come?
No...actually: The zn stain is a broad stain for acid fast bacilli of which mycobacterium tuberculosis is one of many. The specific tests like quantiferon or the pcr test are against you having tb. The culture is the "gold standard" but you will need to wait for it. It might turn out be a cousin of TB and that too will grow out of culture. Stay on TB meds until they are certain of the AFB positive organism. ...Read more
3 days late 2posative clear blue digital test 1negative cheap test a negative doctor test. Am i pregnant?
If doubt then : There is not a way that we can tell you if you are pregnant if you have done one test that is positive and one that is negative. We would simply be guessing which test is correct. In this case you will need to see a doctor for a blood bhcg test. ...Read more
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
After exposure, 3months HIV quali RNA test negative, not detected.4.5months HIV quick test and ELISA test negative.Are those tests all exclusive?
Normal chest X-ray & abdominal/pelivic CT scan, but positive TB skin test? I have low grade fevers, extreme fatigue & swollen lymph nodes. Tb?
I had a positive pregnancy test and a positive blood pregnancy then levels declined quickly. Then positive home test. Negative blood. Any suggestions?
See below: Return to your doctor for additional testing, if needed. ...Read more
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