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No needles, please
Over the next few months some HIV testing centers in the U.S., will
completely replace conventional HIV blood tests with new oral fluid tests
made by Epitope. The test, sold as OraSure, collects oral fluid known as
oral mucosal transudate (OMT) from between a patient's cheek and gum. OMT
has a higher concentration of HIV antibodies and is free of most contaminants
found in saliva.
The
sample is then sent to a lab for testing. Research shows that OraSure, approved
by the Food and Drug Administration in June, is more than 99.9 percent accurate
in 3,570 subjects to determine its accuracy. The researchers concluded that
OraSure was as accurate as serum testing.
A
test to detect HIV-1 antibodies without a blood draw has several advantages
over the standard blood test, including increased safety for collection
and handling of samples, increased patient compliance, and an alternative
for patients in which blood sampling is difficult .
They
also suggest that the saliva test would be well-suited for use in a home
HIV test kit, in large part because it does not involve the use of a needle,
which is both safer and more advantageous to individuals with compromised
venous access.
Moreover,
they note, the collection device is easy to use and portable: the samples
remain stable for at least three weeks, which makes the test useful in outreach
and remote sites. And because training related to oral testing is minimal,
the device reduces the personnel costs associated with gathering samples
for HIV testing.
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