title: Timed 12-hour specimens in outpatient estriol monitoring.
abstract: Use of maternal urinary estriol excretion to monitor fetal status is often hampered by the difficulties of obtaining 24-hour specimens. Evidence is presented that timed, 12-hour overnight specimens may be substituted for the 24-hour specimens in certain patient groups. A simple non-refrigerated transport system which facilitates outpatient estriol monitoring is also described.
mesh_terms: D000553:Ambulatory Care; D004964:Estriol / Q000652:urine*; D005260:Female; D006801:Humans; D010925:Placental Function Tests; D011247:Pregnancy; D012034:Refrigeration; D012306:Risk; D013048:Specimen Handling; D013997:Time Factors
chemical_list: D004964:Estriol