Best urine sample storage for catecholamine analysis?
Derek Gonzales
Modified on: Fri, 19 Jul, 2019 at 4:30 PM
: add equal volumes of 6 N HCl including 100 µM EDTA and urine then store at 4ºC. Add ammonia solution and titrate the pH to 4-7 before processing with the alumina oxide extraction.
