This article as been updated to note three different tests cited in the FDA's letter and to correctly state that Interleukin's deal with NYU focuses on advancing a test for osteoarthritis progression, not PerioPredict.

NEW YORK (GenomeWeb) – The US Food and Drug Administration has issued untitled letters to Interleukin Genetics and DNA-CardioCheck, requesting additional information on their direct-to-consumer tests.

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