Table 2: International Society for Clinical Densitometry Official Position on Definition of Osteoporosis for Men and Premenopausal Women.

Men
Age (years)	T-score	Risk factors for fracture	Diagnosis
50–65	≤ 2.5	Present	Osteoporosis may be diagnosed
≥ 65 years Any age	≤ 2.5 Low BMD	Secondary causes or risk factors present	Osteoporosis diagnosed May be diagnosed
<50			Diagnosis cannot be made on basis of densitometric criteria alone.
Premenopausal women
Age (years)	Z-score	Risk factors for fracture	Diagnosis
20 - menopause	Low	Secondary causes or risk factors present	Diagnosis may be made