ACTH	Adrenocorticotropic hormone
AMH	Anti-Müllerian hormone
AMS	Aging Male’s Symptoms
ASCO	American Society of Clinical Oncology
CNS	Central nervous system
CRH	Corticotropin-releasing hormone
CT	Computed tomography
E2	Estoradiol
EHS	Erection Hardness Score
FSH	Follicle stimulating hormone
FT	Free testosterone
FT3	Free triiodothyronine
FT4	Free thyroxine
GH	Growth hormone
GHRP-2	Growth hormone-releasing peptide 2
GnRH	Gonadotropin-releasing hormone
hCG	Human chorionic gonadotropin
HH	Hypogonadotropic hypogonadism
HRT	Hormone replacement therapy
IIEF-5	The International Index of Erectile Function-5
IGF-1	Insulin-like growth factor 1
JES	Japan Endocrine Society
JSCO	Japan Society of Clinical Oncology
JSGI	Japanese Society of Gender Incongruence
JSHP	Japanese Society for Hypothalamic and Pituitary Tumors
JSMH	Japanese Society of Men’s Health
JSPE	Japanese Society for Pediatric Endocrinology
JSPU	Japanese Society of Pediatric Urology
JSRE	Japan Society of Reproductive Endocrinology
JSRM	Japan Society for Reproductive Medicine
JUA	Japanese Urological Association
LH	luteinizing hormone
LHRH	Luteinizing hormone-releasing hormone
LLR	Lower limit of reference intervals
MSHQ-EjD-SF	Male Sexual Health Questionnaire-Ejaculatory Dysfunction-Short Form
MRI	Magnetic resonance imaging
NA	Not available
PIF	Prolactin inhibiting factor
PitNET	Pituitary neuroendocrine tumor
PRL	Prolactin
rFSH	Recombinant human follicle-stimulating hormone
ST1	Steroidogenic factor 1
T/E ratio	Ratio of total testosterone to estradiol
TESE	Testicular sperm extraction
TRH	Thyrotropin-releasing hormone
TSH	Thyroid-stimulating hormone
TT	Total testosterone
ULR	Upper limit of reference intervals
WHO	World Health Organization