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Tuesday, June 22, 2010

FDA Approves First Diagnostic Assay to detect both HIV Antigen and Antibodies

Posted by Prahallad Panda on 9:10 PM Comments

FDA Approves First Diagnostic Assay to detect both HIV Antigen and Antibodies

I quote,

"The U.S. Food and Drug Administration today approved the first assay to detect both antigen and antibodies to Human Immunodeficiency Virus (HIV). This assay is approved for use as an aid in the diagnosis of HIV-1/HIV-2 infection in adults including pregnant women. It is also the first assay for use as an aid in the diagnosis of HIV-1/HIV-2 infection in children as young as two years old.

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HIV is the virus that can lead to acquired immune deficiency syndrome, or AIDS. HIV damages a person’s body by destroying specific blood cells, called CD4+ T cells, which are crucial to helping the body fight diseases. Two types of HIV have been identified: HIV-1 and HIV-2. HIV-1 is responsible for most HIV infections throughout the world. HIV-2 is found primarily in West Africa; however, cases of HIV-2 infection have been reported in North America and Europe.
The Centers for Disease Control and Prevention report that approximately 18 million people in the United States are tested for HIV each year. Most recent CDC estimates are that there are about 56,000 new HIV infections in the United States each year. In addition, there are more than 1 million people living with HIV in the United States, according to CDC.
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The ARCHITECT HIV Ag/Ab Combo assay is not intended to be used for routine screening of blood donors. However, it is approved as a donor screening assay for HIV-1/HIV-2 infection in urgent situations where licensed blood donor screening tests are unavailable or their use is impractical.
The ARCHITECT HIV Ag/Ab Combo assay will be used in clinical laboratories and in public health laboratories, and is the first assay approved in the United States to detect HIV antigen and antibodies simultaneously."


HIV, tests traditionally include ELISA and Weston-blot test; detect the antibody. It requires sometime for the test to become positive after the virus entry to body and disease  process to set up. This new test  is quicker, based on the nucleic acid; the viral particle.


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