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Featured News Fishy diagnostics for food allergy testing
Fishy diagnostics for food allergy testing
James Cook University scientists have found material commonly used for fish allergy testing is unreliable - potentially putting lives at risk.
A team led by PhD candidate Thimo Ruethers from JCU’s Australian Institute for Tropical Health and Medicine (AITHM) evaluated 26 commercially available fish preparations used for skin prick testing, the most common way of diagnosing fish allergy in Australia.
“We found the amount of allergens present varied greatly, and in some preparations major fish allergens could not be detected. This means many skin prick tests that show a person being tested is not allergic to fish may be wrong,” said Mr Ruethers.
Professor Andreas Lopata from AITHM said the diagnosis of food allergy is fraught with problems.
“There are no regulations requiring the standardisation of commercial preparations for skin prick testing, while improved preparations are pricey and often impossible to get,” he said.
Mr Ruethers said results from skin prick testing need to be questioned as the current preparations appear unreliable in diagnosing fish allergy.
“We urgently need reliable tools to diagnose fish allergy, a serious and often life-threatening immune disease. Current tests can be falsely negative, putting lives at risk,” he said.
Professor Lopata added that seafood is now the number one cause of allergy-related deaths in Australia. He and his team are working on advanced diagnostics and therapy for seafood allergy.
Professor Lopata added that hundreds of different fish species containing different allergens are consumed in Australia, but commercial preparations for allergy testing are available for only four species.
Link to paper here.
JCU’s Molecular Allergy Research Laboratory Twitter link here.
Fish allergy is one of the most common food allergies worldwide among those that are not outgrown after childhood. Allergic reactions can be life-threatening and there is no cure for the serious, chronic immune disease. People suffering from fish allergy must avoid any food potentially containing fish.
The research team at JCU currently evaluates over 100 Australian fish species for their allergens. A recent discovery was the ‘ray of hope’ for fish allergy sufferers. This found that fish with a cartilaginous skeleton, including ray, are for some patients less allergenic than their fishy counterparts with bony skeletons.
Further investigations are underway, and it’s hoped they will lead to improved diagnostics of fish allergy and safe fish menus for fish allergy sufferers.
Mr Thimo Ruethers
T: (07) 4781 3624
Professor Andreas Lopata
T: (07) 4781 4563
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