At least six
sites around the country that offer HIV antibody testing
have stopped using an oral rapid HIV test because of
concerns about its accuracy, the Los Angeles
Times reports. The Los Angeles Gay and Lesbian
Center; the New York City Department of Health and
Mental Hygiene; San Francisco's City Clinic; the
University of California, San Francisco's AIDS
Health Project; and two other centers in San Francisco
have stopped using the oral OraQuick rapid HIV test because
of a high rate of false-positive results.
Health officials
in San Francisco say that of about 200 positive results
from the oral HIV test, follow-up testing showed nearly one
quarter were false positives. New York City health
officials report logging 30 false-positive test
results in November alone.
The OraQuick test
can screen for HIV antibodies from oral fluids gathered
with a swab, a small drop of blood from a finger stick, or
blood drawn with syringes. To date there have been no
reports of an abnormally high number of false-positive
results on either blood test, both of which also can
provide results in about 20 minutes.
The Food and Drug
Administration and the Centers for Disease Control and
Prevention are currently investigating the reports of the
high number of false positives from the oral version
of the rapid HIV test. "Some false-positive
results are expected with any HIV test. Additional testing
is always needed to confirm true positive results,"
FDA spokeswoman Kimberly Rawlings told the Times.
Other prominent
HIV testing sites around the country, including the AIDS
Healthcare Foundation in Los Angeles, Gay Men's
Health Crisis in New York City, and the Whitman-Walker
Clinic in Washington, D.C., have not encountered
problems with high numbers of false-positive results and are
continuing to offer the oral tests. (Advocate.com)