PTH and hyperparathyroidism: Teriparatide, a recombinant human- parathyroid hormone (rh-PTH), composed of 1–34 amino acid fragments of the parathyroid hormone (PTH) [13,14], is an anabolic treatment that addresses the issue of increasing bone mineral density (BMD) in osteoporotic patients, but excess concentration of serum PTH is known to cause hyperparathyroidism and inadvertently increases bone resorption and exacerbates the osteoporotic condition [15].