Abbott Announces FDA Approval for New Chagas Test

25 Nov 2011
Sonia Nicholas
Managing Editor and Clinical Lead

Product news

Abbott has announced that its new Chagas in vitro diagnostic test has received approval from the U.S. Food and Drug Administration (FDA).

Chagas disease is caused by the T.cruzi parasite and is endemic throughout much of Mexico, Central America and South America. The disease is transmitted to animals and people through the infected feces of insects. Infection may also occur congenitally through transfusion of contaminated blood products or through an organ transplant from an infected donor. Chagas disease develops from an acute to a chronic illness, which can cause constipation, digestive problems, abdomen pain, and abnormal heart rhythms or heart failure which can prove fatal.

The ABBOTT ESA Chagas is the first FDA-approved supplemental test that detects antibodies to Trypanosoma cruzi (T. cruzi), a parasite found only in the Americas and commonly acquired through contact with the blood-sucking triatomine, also known as a "kissing bug." The U.S Centers for Disease Control and Prevention (CDC) estimates that as many as 11 million people worldwide are infected with Chagas disease, with more than 300,000 of those infected living in the US.

Following concerns over the transmission of Chagas disease through blood transfusion, the FDA mandated donor screening in 2007. The American Association of Blood Banks (AABB) Chagas Biovigilance Network reports that nearly 1,500 donors with Chagas disease have been identified in the four years since mandatory donor screening was implemented.

"Chagas disease can cause significant and debilitating symptoms for those infected," said John Coulter, divisional vice president, Diagnostics, Abbott. "The new ABBOTT ESA Chagas test provides organizations that screen blood with an approved testing method to help keep the blood supply safe and enable them to confidently counsel infected donors."

The ABBOTT ESA Chagas is an in vitro enzyme strip assay (ESA) intended for the qualitative detection of T. cruzi in human serum and plasma specimens. The test is intended for use as an additional, more specific test on human serum or plasma specimens found repeatedly reactive using a licensed screening test.

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Blood TransfusionBlood Transfusion involves giving donor blood to a recipient patient. Screening is essential to avoid transfusion reactions. Blood banks use immunohematological techniques to determine rh and ABO blood group, and screen for antibodies using specific antisera. Blood Banks use Direct Coombs Tests (DCT) and Indirect Coombs Tests (IAT) to detect hemolysis and Haemolytic Disease of the Newborn (HDN).ImmunologyImmunological techniques measure and characterize immune responses. Immunology kits and analysis systems often use techniques such as ELISA, radioimmunoassay (RIA) and immunodiffusion assays, Immunohistochemistry, and flow cytometry. Immunologists use equipment such as flow Cytometers, plate readers, plate washers and fluorescent microscopes.Clinical MicrobiologyMicrobiology is the study of microorganisms including protists, prokaryotes, fungi, and, often, viruses. Microorganisms are a useful research tool as genetic vectors and, in immunology, for antibiotic susceptibility testing, cellular biology and genetics. Microorganisms commonly grow readily in incubators with microbial culture media; this can contain chromogenic supplements to differentiate between cell lines. Estimate your culture’s density of microorganisms with colony counters, or screen and select colonies for desirable clones with automated colony pickers. Additionally, equipment is available to monitor environments for the presence of microbes and identify with microbial identification instruments. Find the best microbiology products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Chagas DiseaseESATrypanosoma Cruzi