title: The usefulness of the leuprolide stimulation test as a diagnostic method of idiopathic central precocious puberty in girls.
abstract: Central precocious puberty (CPP) diagnosis is based on clinical evaluation, but hormonal evaluation is crucial. The aim of the study was to evaluate the usefulness of the leuprolide stimulation test for diagnosis of idiopathic CPP. Sixty-one girls, aged 5-8 years, were evaluated retrospectively for premature breast development. According to clinical evolution, 28 had progressive puberty and 33 nonprogressive puberty. All underwent a leuprolide stimulation test. Cutoff points, sensitivity, and specificity for gonadotropins and estradiol were determined by receiver operating characteristic (ROC) curves. Cutoff points for CPP were: baseline LH: > 0.1 mUI/l, FSH: > 2.3 mUI/l, LH/FSH ratio: > 0.23, estradiol: > 12 pg/ml; and stimulated LH: > 5.5 mUI/l, LH/FSH ratio: > 0.24, estradiol: > 79.67 pg/ml. The best diagnostic efficiency for progressive puberty were stimulated LH/FSH ratio (sensitivity: 100%, specificity 94%) followed by stimulated LH (sensitivity: 93%, specificity: 100%). Stimulated LH/FSH ratio and LH resulted in the most useful parameters for the diagnosis of CPP. Stimulated estradiol did not add more information.
authors.affiliation: Endocrinologia Pediàtrica, Servei Pediatria, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Carretto
authors.affiliation: Servei Endocrinologia i Nutrició, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Salinas-Vert
authors.affiliation: Laboratori Hormonal, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: M L
authors.initials: ML
authors.lastname: Granada-Yvern
authors.affiliation: Endocrinologia Pediàtrica, Servei Pediatria, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Murillo-Vallés
authors.affiliation: Laboratori Hormonal, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Gómez-Gómez
authors.affiliation: Servei Endocrinologia i Nutrició, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Puig-Domingo
authors.affiliation: Endocrinologia Pediàtrica, Servei Pediatria, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Bel
mesh_terms: D002648:Child; D004958:Estradiol / Q000097:blood; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D016729:Leuprolide / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000097:blood; D011629:Puberty, Precocious / Q000097:blood / Q000175:diagnosis*; D012372:ROC Curve
chemical_list: D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D016729:Leuprolide