Parathyroid hormone reference ranges in healthy individuals classified by vitamin D status

ConclusionsUpper reference limits (URL) for PTH in vitamin D sufficiency/insufficiency were similar and lower than current values. Clinically important PTH elevations were observed in vitamin D deficiency, where revised reference ranges with a higher URL may be appropriate. These data may help to distinguish vitamin D-related PTH elevations from other causes [e.g., primary (normocalcemic) or secondary hyperparathyroidism].
Source: Journal of Endocrinological Investigation - Category: Endocrinology Source Type: research