title: Simple method for sampling consecutive 24-hour urine for epidemiological and clinical studies.
abstract: 'Aliquot cups' a newly devised tool for collecting 24-hour urine samples were useful and accurate enough for the estimation of individual 24-hour excretion of sodium and potassium. Data from 24-hour collections for 31 days for 5 healthy volunteers showed relatively large intra- and inter-individual variation. These data suggest that at least 5 consecutive days of urine collection would be needed to make a reasonable estimate of daily intake.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D011188:Potassium / Q000652:urine; D012964:Sodium / Q000652:urine; D013048:Specimen Handling / Q000295:instrumentation; D014556:Urine / Q000032:analysis*
chemical_list: D012964:Sodium; D011188:Potassium