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Get the Facts
San Francisco AIDS Foundation

HIV Testing

...estimates that 38% to 44% of all adults in the United States have been tested for HIV and that between 16 and 22 million people aged 18-64 years are tested for HIV annually. However, of more than one million people living with HIV in the U.S., it is estimated that about one-quarter (252,000 to 312,000 persons) are unaware of their HIV status. Because they do not know they are infected, these individuals are unable to benefit from clinical...
Ask the Experts

Do I need to do both tests - ELFA and ELISA?

Dear, Doc:You are truly inpsirational and motivating to the many readers of your forum. Your photograph itself is so reassuring that people feel more collected in dealing with the issue. Here is a small poem to thank you for all the work you have...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...Hello xobninbox,1.No, you should not be worried.2.HIV-antibody tests are considered definitive at the three-month mark.3.Correct. There would be no difference.4.I would consider your 96-day Read more »

HBsAG (ELISA) method

hi,ELISA is a framework or a method that involves testing for the presence of antibodies by using antigens.this method can be used to detect both HBV and HIV infection right?if a test is performed for HBsAG using ELISA, does it also "automatically"...
Barbara McGovern, M.D.

Response from Barbara McGovern, M.D.

Tufts University School of Medicine
No these tests would be completely separate. Read more »

please help me understand.

Dr. Brian, I asked for an antibody test and the result report says screening test for HIV 1 and HIV 2 antibody and antigen and the result is non reactive. The test value is .31 and the cut off value is 1.00 and the method they used is M E I A. I...
Brian Conway, M.D.

Response from Brian Conway, M.D.

University of British Columbia
...MEIA simply refers to the type of Elisa (EIA) test that was done, as the Elisa is the standard test for the measurement of HIV antibodies. Your sample generated a signal that was well below the cut-off to establish that the result is positive,... Read more »


A week ago my 17-year-old daughter received a letter from Red Cross indicating she screened HIV positive after donating at a recent blood drive. Results were HIV-1/HIV-2 Positive, Confirmatory Indeterminate, NAT Negative. Retesting was done at a...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
...positive test! HIV testing center and certainly HIV specialists are well aware of these potential complicating factors and we have methods for sorting out serological results that are either in dispute or indeterminate. In your daughter's case of... Read more »
New York State Department of Health AIDS Institute

Diagnostic, Monitoring and Resistance Laboratory Tests for HIV HIV antibody test with confirmation by Western blot or indirect immunofluorescence assay to establish diagnosis of chronic HIV infection. HIV antibody screening tests include enzyme immunoassays (ELISA/EIA), chemiluminescent immunoassays... Read more »
U.S. Food and Drug Administration

New Ways to Prevent and Treat AIDS

...Interview Survey by the Centers for Disease Control and Prevention found that only 20 percent of peopleat increased risk for HIV infection -- such as intravenous drug users, male homosexuals, and prostitutes -- agreed to be tested forHIV. More... Read more »
Black AIDS Institute

Black America and HIV Testing

..."Fifty-two percent of Black people above age 18 reported having been tested." An estimated 21 percent of people living with HIV in the U.S. -- or 232,700 people -- are unaware of their infection. 11 We don't know the exact racial breakdown of... Read more »
Gay Men's Health Crisis

Stalking HIV Immune Dysregulation

...experimental treatment strategies such as Structured Treatment Interruptions (STIs) and antiretroviral (ARV) therapy during acute HIV infection. Several of the assays expanding our knowledge of HIV pathogenesis and HIV-specific immunity are also... Read more »
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