The relationship between PTH concentrations and hypercalcemia.
Untitled Document
“Hypercalcemia in conjunction with an elevated PTH concentration and an undetectable PTHrP concentration is considered the gold standard for primary hyperparathyroidism diagnosis. However, about 75% of affected dogs have normal PTH concentrations, which are inappropriate in the face of hypercalcemia. In normal animals, a high calcium concentration should result in undetectable PTH concentrations.”
-Michael R. Goldstein, DVM
From A challenging case: Primary hyperparathyroidism in a dog