Türk Osteoporoz Dergisi, cilt.25, sa.3, ss.111-114, 2019 (Scopus)
Objective: Parathyroid hormone (PTH) levels are elevated in the blood due to various reasons and named as primary or secondaryhyperparathyroidism. There is no any study that investigated the etiology of elevated PTH.Materials and Methods: The study included 137 patients who had elevated PTH, which was detected in blood tests that were performeddue to any reason, during 1-year period.Results: Of all patients 118 (86.1%) were female and 19 (13.9%) were male. Vitamin D deficiency was found in 88 (64.2%), primaryhyperparathyroidism (PHPT) in 38 (27.7%), familial hypocalciuric hypercalcemia (FHH) in 8 (5.8%), and chronic renal failure (CRF) in 3 (2.2%)patients.Conclusion: Vitamin D deficiency is a common disorder in general population, and occasionally coexisted with increased PTH level. Therefore,vitamin D deficiency should be kept in mind when PTH studied as a first test and is found to be high. The other reason such as PHPT, FHHand CRF must be also investigated.