News Archive
3/28/2001
FDA Accepts ImmunoCAP® Allergy Blood
Test for Quantitation
KALAMAZOO, Mich., March 28 -- Pharmacia Diagnostics today announced
that the ImmunoCAP Allergy Blood Test became the first and only
allergy test to be accepted as a truly quantitative test by the
United States Food and Drug Administration (FDA). For the first
time, it is possible to measure with unprecedented accuracy an
individual's sensitivity to a given allergen using ImmunoCAP. This
information can help clinicians better manage the 50 million Americans
who suffer from allergies and allergy-like symptoms.
"This signifies a major advance in the evolution of blood
allergy technology," said Brock Williams, PhD, Clinical Research
Professor at Children's Mercy Hospital in Kansas City, Missouri,
and a leading allergy and diagnostics expert. "It provides
a new benchmark for accuracy and reliability, and allows clinicians
to assess an individual's reaction to specific food and environmental
allergens, and to tailor treatment strategies appropriately."
With a small blood sample taken in a physician's office and analyzed
in a laboratory, patients and physicians can learn the cause of
suspected allergic symptoms. ImmunoCAP measures the amount of IgE,
an antibody circulating in the blood when the body is fighting
an allergen. Extensive data has been generated that demonstrates
that ImmunoCAP data meets several performance criteria, including
an international reference calibrator and accuracy and precision
data. ImmunoCAP also demonstrates patient sensitivity to specific
allergens by reporting the number of Kilo-units per liter (kUA/L),
where the "A" represents the amount of specific IgE antibody
present in the blood.
The Evolution of In Vitro Allergy Diagnosis
Allergy testing has traditionally been performed by allergy specialists
applying allergens directly to or under the skin, with a raised
welt indicating sensitivity. However, skin testing carries the
risk of serious allergic reaction, is not recommended for young
children and seniors, and is not readily available to non-specialists.
As a result, in vitro tests that can be used in all physicians'
offices were developed.
A recent study, published in the June issue of the Journal
of Allergy and Clinical Immunology, demonstrated ImmunoCAP
technology's superior reliability and accuracy compared to four
other serologic tests, including the older RAST™ blood
test. "Other tests including the still-used, older RAST
technology produce less accurate results," said Dr. Williams.
"We're delighted by the FDA's recognition of ImmunoCAP as
a quantitative diagnostic system," said Robert Reinhardt,
MD, U.S. Medical Director at Pharmacia Diagnostics. "The application
of this state-of-the-art yet easy-to-use technology can positively
impact allergy-like symptom management for patients."
Strong Clinical Utility
Because allergy-like symptoms can be caused by a number of medical
conditions, including bacterial infection or viral infection,
it is important to have a simple, effective way to differentiate
between atopy and other upper respiratory diseases. Once allergy
is determined to be the cause of the symptoms, strategies to
manage the offending culprits begin and quantitative information
about allergens can be helpful.
Allergy is often referred to as a threshold disease, meaning that
individuals can be allergic to one or many things, but may not
exhibit symptoms until they are exposed to enough allergic triggers
to put them "over the top." Sometimes treatment is as
simple as taking an allergic trigger out of a patient's environment
- particularly one to which he/she is highly allergic.
"An accurate quantitation of antibodies can help clinicians
identify the major allergens that are causing symptoms and thus
provide tools for keeping a patient under his/her allergic threshold,
either by avoidance or medical therapy," said Dr. Williams.
Consumers and health professionals with questions about ImmunoCAP
or the role of diagnostic quantitation can call 1-877-862-4948
or visit www.DoIHaveAllergies.com for additional information.
Pharmacia Diagnostics, a division of Pharmacia Corporation, is
headquartered in Uppsala, Sweden, and is a world leader in in
vitro diagnostic research and product innovation. The U.S.
headquarters for Pharmacia Diagnostics is in Kalamazoo, Michigan.
Pharmacia Corporation (NYSE: PHA) is a leading global pharmaceutical
company created through the merger of Pharmacia & Upjohn with
Monsanto Company and its G.D. Searle unit. Pharmacia has a broad
product portfolio, a robust pipeline of new medicines, and an annual
investment of more than $2 billion in pharmaceutical research and
development.
SOURCE: Pharmacia Corporation
back to headlines
|