(fen´ĭ-stiks) trademark for a reagent strip impregnated with ferric chloride and glacial acetic acid; used in screening tests for phenylketonuria and in detection of salicylates and chlorpromazine in the urine. Found on http://www.encyclo.co.uk/local/21001
(fen´ĭ-stiks) trademark for a reagent strip impregnated with ferric chloride and glacial acetic acid; used in screening tests for phenylketonuria and in detection of salicylates and chlorpromazine in the urine.