Phenistix

Phenistix

 [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.
Mentioned in ?
References in periodicals archive ?
Phenistix reagent strips contain ferric ammonium sulfate, magnesium sulfate, and cyclohexylsulfamic acid.
10 When a Phenistix is dipped into a young child's urine, a purple color develops.