The importance of parathormone in determining the deficiency of vitamin D.

Background: To evaluate the association of parathormone with vitamin D and to find a threshold value for vitamin D. Material and methods: This descriptive study included 11,753 (2352 males, 9401 females) patients from University hospital and 25-OH vitamin D and PTH levels were evaluated. Results: The mean parathormone level was 49.33 ± 22.39 pg/mL. 18.7% of the patients had hyperparathyroidism. 77.4% of the patients had low 25-OH D vitamins. There was a negative correlation between serum parathormone levels and 25-OH vitamin D levels. The minimum 25-OH vitamin D level to keep PTH below 65 pg/mL was 18.5 ng/mL. Conclusion: For determining the threshold value of 25 OH vitamin D, serum PTH levels should be assessed with 25-OH vitamin D levels. [ABSTRACT FROM AUTHOR]