1. ¹Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles BioMedical Research Institute, Torrance, CA, USA
2. ²Centre for Reproductive Medicine and Andrology, University of Muenster, Muenster, Germany
3. ³Center for Reproductive Medicine and Andrology, University Hospital Halle, Martin-Luther-University Halle-Wittenberg, Halle, Germany
4. ⁴Department of Urology, Tulane University, New Orleans, LA, USA
5. ⁵Department of Endocrinology, VU University Medical Center, Amsterdam, The Netherlands
6. ⁶Department of Endocrinology, Academish Ziekenhuis, Gent, Belgium
7. ⁷Centre Hospitalier Universitaire, Liège, Belgium
8. ⁸Faculty Life Science, Bar-Ilan University, Israel
9. ⁹Centre for Applied Urological Research, Queen's University, Kingston, Ontario, Canada
10. ¹⁰Division of Geriatric Medicine, St Louis University, and GRECC, St Louis VA Medical Center, St Louis, MO, USA
11. ¹¹Department of Urology, Erasme Hospital, University Clinics Brussels, Brussels, Belgium
12. ¹²Department of Urology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
13. ¹³Department of Urology and Pediatric Urology, University Hospitals, Justus-Liebig-University, Giessen, Germany
14. ¹⁴Department of Endocrinology, University of Manchester, Manchester Royal Infirmary, Manchester, UK

Correspondence: Professor C Wang, Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute, 1000 W. Carson Street, Torrance, CA 90509, USA. E-mail: wang@labiomed.org

Received 12 September 2008; Accepted 12 September 2008; Published online 16 October 2008.

Abstract

The new ISA, ISSAM, EAU, EAA and ASA recommendations on the investigation, treatment and monitoring of late-onset hypogonadism in males provide updated evidence-based information for clinicians who diagnose and treat patients with adult onset, age related testosterone deficiency.