Abstract
Background: Changes in pharmacological agents and advancements in laboratory assays have changed the gonadotropin-releasing hormone analog stimulation test. Objective: To determine the best predictive model for detecting puberty in girls. Subjects: Thirty-five girls, aged 2 years 7 months to 9 years 3 months, with central precocious puberty (CPP) (n=20) or premature thelarche/premature adrenarche (n=15). Methods: Diagnoses were based on clinical information, baseline hormones, bone age, and pelvic sonogram. Gonadotropins and E2 were analyzed using immunochemiluminometric assay. Logistic regression for CPP was performed. Results: The best predictor of CPP is the E2-change model based on 3- to 24-h values, providing 80% sensitivity and 87% specificity. Three-hour luteinizing hormone (LH) provided 75% sensitivity and 87% specificity. Basal LH lowered sensitivity to 65% and specificity to 53%. Conclusions: The E2-change model provided the best predictive power; however, 3-h LH was more practical and convenient when evaluating puberty in girls.
Original language | English (US) |
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Pages (from-to) | 387-392 |
Number of pages | 6 |
Journal | Journal of Pediatric Endocrinology and Metabolism |
Volume | 28 |
Issue number | 3-4 |
DOIs | |
State | Published - Mar 1 2015 |
Keywords
- GnRHa stimulation testing
- central precocious puberty
- girls
- leuprolide stimulation test
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Endocrinology, Diabetes and Metabolism
- Endocrinology