Primary Hyperparathyroidism due to Benign Tumor
The Calcemia Panel contains two graphics that plot the relationship between PTH vs. calcium and PTH vs. vitamin D. In a normal healthy dog or cat, the patient should plot within the green shaded area.
This patient's hypercalcemia is PTH dependent (too much PTH) caused by a benign tumor of the parathyroid gland (primary hyperparathyroidism). The patient is also mildly vitamin D insufficient.
Hypercalcemia of Malignancy
This patient's hypercalcemia is PTH independent caused by a malignant tumor (hypercalcemia of malignancy). The patient has adequate vitamin D stores.
Hypoparathyroidism Secondary to Vitamin D Deficiency
This patient's hypocalcemia is PTH independent caused by a severe vitamin D deficiency (secondary hypoparathyroidism).
This patient's hypocalcemia is PTH dependent (too little PTH) caused by chemotherapeutic damage to the parathyroid gland (primary hypoparathyroidism). The patient is mildly vitamin D insufficient.
The Right Tests for the Right DecisionSM