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Doctor insights on: False Positive Test

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What is meant by false positive test results?

Not really positive: A false positive test is when the test is really negative but was reported or converted to positive but is not a true indicator for the result. ...Read more

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Drs what r causes of HIV false positive test?

Drs what r causes of HIV false positive test?

Multiple causes: On the average, 0.2 percent of elisa tests give a false positive HIV test result that are then proven incorrect by a western blot test. Autoimmune diseases, recent vaccinations, multiple pregnancies or prior infections with hepatitis b, malaria or tuberculosis can stimulate the production of antibodies that cross create with hiv, thus producing a false positive HIV test. ...Read more

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What causes a false positive test for marijuana i feel that the test is wrong and want to be retested

What causes a false positive test for marijuana i feel that the test is wrong and want to be retested

Many things: But what you have to ask is whether they did a confirmatory test. Screening tests have many false positives, and several prescription drugs can interact with the test for thc and give false positives. A positive screening test should always be followed by a confirmatory test, which pretty much always can distinguish between true and false positive. Esp. True if there are legal/social consequences. ...Read more

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Can benzocaine cause a false positive test for cocaine?

Can benzocaine cause a false positive test for cocaine?

No: Use of anesthetic agents, including benzocaine, tetracaine, and lidocaine, should not cause false-positive Cocaine test results in urine testing for any drugs of abuse, including cocaine. ...Read more

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How accurate is a skin biopsy for lupus? Can you have a false/ positive test result?

How accurate is a skin biopsy for lupus?  Can you have a false/ positive test result?

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

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On cd 11-12 I had a positive digital ovulation test (peak) today is cd 17 and I have egg white like mucus. Was it a false positive test?

On cd 11-12 I had a positive digital ovulation test (peak) today is cd 17 and I have egg white like mucus. Was it a false positive test?

Ovulation test: The home ovulation test is the more accurate than monitoring cervical mucous. Cervical mucous monitoring is not very accurate. The most accurate test for ovulation is a midluteal phase Progesterone blood test ...Read more

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Can creon cause a false positive test for acute pancreatitis?

Can creon cause a false positive test for acute pancreatitis?

Unclear question: What is creon? Acute pancreatitis is diagnosed from a combination of clinical signs, symptoms and lab tests. The usual features are severe abdominal pain and tenderness, elevated blood levels of trypsin and lipase. Depending on the severity of illness there may be other manifestations such as low calcium, shock, nausea vomiting and death. ...Read more