CORRELATION BETWEEN MORNING URINE ESTRIOL CONCENTRATION AND 24-HOUR ESTRIOL EXCRETION

  • 1 January 1976
    • journal article
    • research article
    • Vol. 48  (6) , 678-681
Abstract
In an attempt to circumvent the need for 24-h urine collections for estriol analyses in assessment of fetal status, the possibility of using morning urine samples was investigated. Results indicate good correlation between 24-h estriol excretion and morning estriol concentration, and between corresponding E/C ratios [estrogen-creatinine ratios], similar morning and 24-h estriol concentrations, high dependence of estriol and creatinine excretion on 24-h urine volume but not on morning volume, larger variations in 24-h than in morning urine volume, and better consistency of values in morning than in 24-h samples in pathologic prengnancy. The use of serial morning urine concentrations at least as an outpatient monitoring procedure is suggested.

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