Diagnosis

Because hypercalcemia can cause few, if any, signs or symptoms, you might not know you have the disorder until routine blood tests reveal a high level of blood calcium. Blood tests can also show whether your parathyroid hormone level is high, indicating that you have hyperparathyroidism.

To determine if your hypercalcemia is caused by a disease such as cancer or sarcoidosis, your doctor might recommend imaging tests of your bones or lungs.