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Doctor insights on: False Negative Hiv Test

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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

Dr. Ira Katz
16 doctors shared insights

Hiv (Definition)

Hiv infection is caused by a retrovirus....This retrovirus binds to CD4 cells (for the most part). You may detect the virus by several different methods. An elisa test (enzyme linked immunosorbent assay). You may also detect it by doing a test referred to as a western blot (a gel protein electrophoresis). Thirdly by pcr (polymerase chain reaction) which ...Read more


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If i get infected with HIV on june and infected with HCV in november , would this give me false negative hiv test 6 months last exposure in december?

If i get infected with HIV on june and infected with HCV in november , would this give me false negative hiv test 6 months last exposure in december?

See below: See your doctor to get a HIV nucleic acid test. if the result is negative at more three months after exposure you would be essentially sure that you do not have HIV. Hep C infection will not give a false negative for the HIV test. ...Read more

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Hello. Can type 1 diabetes cause a false negative hiv test i tested for hiv ab/ag at 3 months negative and hiv1,2 at 6mnths negative Is it conclusive?

Hello.
Can type 1 diabetes cause a false negative hiv test i tested for hiv ab/ag at 3 months negative  and hiv1,2 at 6mnths negative
Is it conclusive?

No and yes: HIV test is not affected by other disease conditions. A negative test at 6 months tells you that you didn't have the infection from that encounter. However it would not have ruled out HIV if you had been exposed to HIV infected blood or secretion subsequently. ...Read more

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Whats the possibility of getting a false negative HIV test, when it was done at a clinic, blood was taken from my arm and sent away to lab?

Whats the possibility of getting a false negative HIV test, when it was done at a clinic, blood was taken from my arm and sent away to lab?

Depends: It depends on how long ago did you have any exposure, and what test is being done. Antibody tests may take 6-12 months to turn positive. An HIV nucleic acid test, if negative, at about 12 weeks after exposure essentially rules out HIV. Any test, if done too soon after exposure will not give a reliable result. ...Read more

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Is it possible to have a false negative rapid HIV test well after window period (9 months after last possible exposure)? If so , why?

Is it possible to have a false negative rapid HIV test well after window period (9 months after last possible exposure)? If so , why?

Unlikely: When sufficient time has elapsed after one's last potential exposure, HIV tests are usually reliably positive if one is in fact infected. One has to be aware that the usual test looks for hiv-1, but there is also an hiv-2 which is far less common but could be in you and the standard test would not recognize it. ...Read more

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Possibility of false negative after 6mth period HIV test? Gave oral to partner in question now I have lesions on the tounge maybe ohl, could be hiv?

Possibility of false negative after 6mth period HIV test? Gave oral to partner in question now I have lesions on the tounge maybe ohl, could be hiv?

Depends: What type of test was done? A test for HIV nucleic acids, if negative at 6 months after potential exposure, would rule out HIV infection. If it was antibody test, it is good but it would be prudent to repeat at one year after exposure. See the following for safe sex guidelines. http://www.aids.org/topics/aids-factsheets/aids-background-information/what-is-aids/safer-sex-guidelines/ ...Read more

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How sick would u be to get a false negative on hiv antibody test. Took 2 blood test and 4 oraquick. Ot was took 12 years later afraid im compromised ?

How sick would u be to get a false negative on hiv antibody test. Took 2 blood test and 4 oraquick. Ot was took 12 years later afraid im compromised ?

HIV tests: False negative results are unusual provided it's been at least 6 weeks or so since the probable exposure to the disease as there is a window during which you could be infected and not have sufficient antibodies but within a few months the test should be positive every time. Viral load PCR testing can also be used if further confirmation is needed. ...Read more

Dr. Lisa Oldson
368 doctors shared insights

Hiv Test (Definition)

There are several ways to detect the HIV virus. The first is by antibodies. This includes eia (enzyme immuno assay). The rapid HIV tests are these types. The second way detects proteins on the viral coat (western blot). This is a gel plate electrophoresis. Thirdly there is pcr (polymerase chain reaction). This detects and amplifies dna allowing a viral ...Read more


Dr. Ed Friedlander
1,454 doctors shared insights

Human Immunodeficiency Virus (Definition)

Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (aids), [1][2] a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections ...Read more