Insulin-like peptide 3 (INSL3) as an indicator of leydig cell insufficiency (LCI) in Middle-aged and older men with hypogonadism: reference range and threshold.

Address: School of Biosciences, University of Nottingham, Sutton Bonington, UK.; Department of Chronic Diseases and Metabolism, Laboratory of Clinical and Experimental Endocrinology, Leuven, KU, Belgium.; Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium.; Department of Obstetrics, Gynaecology and Andrology, Albert Szent-Gyorgy Medical University, Szeged, Hungary.; Department of Medicine, Santiago de Compostela University, Complejo Hospitalario Universitario de Santiago (IDIS), CIBER de Fisiopatología Obesidad y Nutricion (CB06/03), Instituto Salud Carlos III, Santiago de Compostela, Spain.; Endocrinology and Andrology Unit, "Mario Serio" Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy.; Centre for Epidemiology Versus Arthritis, The University of Manchester & NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK.; Andrology Clinic, Tartu University Hospital, and Institute of Clinical Medicine, and Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia.; Department of Andrology and Reproductive Endocrinology, Medical University of Łódź, Łódź, Poland.; Department of Geriatrics, University Hospitals Leuven, and Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium.; Department of Endocrinology, Manchester University NHS Foundation Trust, Manchester, UK.; Institute of Reproductive and Developmental, Department of Metabolism, Digestion and Reproduction, Imperial College London, Hammersmith Campus, London, UK.; School of Biosciences, University of Nottingham, Sutton Bonington, UK.; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK.