Osteoporosis is diagnosed when the patient exhibits osteoporotic features. In the absence of a fracture, this can be estimated by measuring the BMD T-value. Thus, osteoporosis can be diagnosed as long as the T-value is below -2.5, even if no present fracture exists. Before concluding that the decrease in BMD or the fracture is caused by osteoporosis, other causes of the decrease in BMD must first be excluded. A whole-body bone scan, i.e. relevant blood tests, is recommended! How to diagnose osteoporosis? 1, judged by age, the older the age the greater the possibility of osteoporosis. 2.Sudden severe back pain, especially at night and when waking up early. 3.Osteoporosis can make people shorter. 4.Osteoporosis can make a person hunchbacked. 5.Osteoporosis can easily cause fracture. If you find any of the above symptoms, go to the hospital for examination in time.