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Doctor insights on: Tysabri Antibodies Elisa

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My ELISA HIV test came up negative after 1month exposure. How accurate is this test?

My ELISA HIV test came up negative after 1month exposure. How accurate is this test?

90%: There's a period of time after a person is infected during which they won't test positive. This is called the “hiv window period.” The window period can be from 9 days to 3-6 months, depending on the person's body and on the HIV-test that's used. ...Read more

Antibody (Definition)

An antibody is a protein the body's immune system makes to identify potentially harmful substances in the body. Antibodies attach to the substance on a molecular level and mark it so the immune ...Read more


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What does the antibody concentration of ELISA signify?

What does the antibody concentration of ELISA signify?

Quantity: The lower the antibody concentration in the ELISA producing a positive result, the higher the concentration of the antibody's target being tested. ...Read more

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How do you measure anti-dna antibody? Using elisa?

How do you measure anti-dna antibody? Using elisa?

Anti-DNA antibodies: Simple blood tests can be performed to test for anti-dna antibodies. Usually the screen is started with a basic ANA test which can then be followed with more specific antibody testing to determine if a specific disease can be identified. Of course, symptoms must also correlate since we do not simply provide diagnosis based on lab findings. ...Read more

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Is HIV 1/2 antibody combo(cmia) test as accurate as ELISA test? Also if the combo test at 75 & repeated at 100 days concl. If they are non reactive?

Is HIV 1/2 antibody combo(cmia) test as accurate as ELISA test? Also if the combo test at 75 & repeated at 100 days concl. If they are non reactive?

HIV testing: Yes the combination of testing for p24 antigen and antibodies to HIV 1 ; 2 is quite accurate, even if done using techniques other than elisa. The negative results at >3 mos after exposure make it almost certain that you are not infected with this virus, although there have been very rare cases in which antibodies were not detected until 6 to 12 mos later. You are probably fine. ...Read more

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What happens if "h. pylori IgG antibodies serum by ELISA positive"?

H. pylori infection: .. which causes gastritis with symptoms of early satiety, abdominal pain, heartburn. If you are symptomatic, then you will need the treatment. If you are not symptomatic or have responded to treatment already, then your test result indicates ongoing antibody production (normal immune response to previous infection) and no treatment is required. Good luck! ...Read more

Elisa (Definition)

Enzyme-linked immunosorbent assay (elisa) is a test that uses antibodies and color change ...Read more