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First Morning Voided Urinary Gonadotropin Measurements as an Alternative to the GnRH Test

Journal article
Authors A. Demir
R. Voutilainen
U. H. Stenman
L. Dunkel
Kerstin Albertsson-Wikland
Ensio Norjavaara
Published in Hormone Research in Paediatrics
Volume 85
Issue 5
Pages 301-308
ISSN 1663-2818
Publication year 2016
Published at Institute of Clinical Sciences, Department of Pediatrics
Pages 301-308
Language en
Links dx.doi.org/10.1159/000440955
Keywords Luteinizing hormone, Follicle-stimulating hormone, Gonadotropin-releasing hormone test, Hypothalamic-pituitary-gonadal function, Pubertal disorders, central precocious puberty, hormone-releasing hormone, follicle-stimulating-hormone, luteinizing-hormone, normal-children, immunofluorometric assays, lh-rh, serum, patterns, increase, mir a, 1995, journal of clinical endocrinology & metabolism, v80, p1457, mir a, 1994, pediatric research, v36, p221
Subject categories Pediatrics

Abstract

Aims: We studied whether first morning voided ( FMV) urinary gonadotropin measurements could be used as a noninvasive alternative to the GnRH test in the assessment of the hypothalamic-pituitary-gonadal function in children. Methods: In a single-center study, we compared FMV urinary gonadotropin concentrations with basal and GnRH-stimulated serum gonadotropin levels in 274 children and adolescents (78 girls, 196 boys) aged 5-17 years referred for growth and pubertal disorders. The concordance between FMV urinary gonadotropin concentrations and GnRH test results was assessed. Results: FMV urinary LH (U-LH), urinary FSH (U-FSH) and their ratios correlated well with the corresponding basal and GnRH-stimulated serum parameters (r = 0.66, p < 0.001). Receiver operating characteristic curve analyses using urinary and serum LH and FSH concentrations showed that FMV U-LH and U-LH/U-FSH performed equally well as the GnRH test in the differentiation of early puberty (Tanner stage 2) from prepuberty (Tanner stage 1) (area under the curve 0.768-0.890 vs. 0.712-0.858). FMV U-LH and U-LH/UFSH performed equally well as basal serum LH in predicting a pubertal GnRH test result (area under the curve 0.90-0.93). Conclusion: FMV U-LH determination can be used for the evaluation of pubertal development and its disorders, reducing the need for invasive GnRH stimulation tests. (C) 2016 S. Karger AG, Basel

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