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Related Experiment Videos

HCG stimulation test in children with abnormal sexual development

D B Grant, B M Laurance, S M Atherden

    Archives of Disease in Childhood
    |August 1, 1976
    PubMed
    Summary

    The human chorionic gonadotropin (HCG) test effectively assesses testosterone levels in children with disorders of sexual development. A 3-day HCG stimulation test is as reliable as a 5-day test for evaluating testosterone response.

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    Area of Science:

    • Pediatric Endocrinology
    • Reproductive Medicine
    • Clinical Chemistry

    Background:

    • Disorders of sexual development (DSD) require accurate assessment of testicular function.
    • Plasma testosterone levels are a key indicator of Leydig cell function.
    • Human chorionic gonadotropin (HCG) stimulation is a standard method to assess the testosterone production capacity of testes.

    Purpose of the Study:

    • To evaluate the efficacy of HCG stimulation for assessing plasma testosterone levels in children with DSD.
    • To compare the diagnostic utility of a 3-day versus a 5-day HCG stimulation protocol.
    • To analyze testosterone response patterns in various DSD conditions.

    Main Methods:

    • Radioimmunoassay was used to measure plasma testosterone levels.
    • Sixty children with DSD underwent HCG stimulation testing.
    • A subset of 21 children had their testosterone levels compared after 3 and 5 days of HCG injections.

    Main Results:

    • A strong correlation (r=0.93) was observed between 3-day and 5-day HCG tests, indicating no significant advantage of the longer protocol.
    • Boys with normal genital development showed a testosterone increment of 2.0-8.5 nmol/L after 3 HCG injections.
    • Children with anorchia exhibited a minimal response, while those with other DSDs (micropenis, cryptorchidism, hermaphroditism, etc.) displayed variable testosterone responses to HCG.

    Conclusions:

    • The 3-day HCG stimulation test is a reliable and efficient method for evaluating testosterone production in children with DSD.
    • HCG testing can aid in diagnosing conditions like anorchia and assessing testicular function in diverse DSD presentations.
    • This study supports the use of shorter HCG protocols for testosterone assessment in pediatric DSD evaluations.

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