How is dx of OP?

Blood tests (CBC[anemia], serum chem normal in 1ary OP, LFT, TSH, vitamin D deficiency, 24-hour calcium/creatinine hypercalciuria maybe due to malabsorption syndromes, testosterone and LH/FSH male hypogonadism) BMD (done for women age 65 and men over 70 regardless of risk factors, postmenopausal women and men over 50 if have risk factor/ adult age fracture determine degree of OP, adult with condition or medication)