Familial hypocalciuric hypercalcemia (FHH) is a rare cause of persistently high blood calcium levels. It can be confused with primary hyperparathyroidism.
I have had high calcium levels for over 30 years, but have never been diagnosed with parathyroid disease. I’ve never had any health problems. Do I have primary hyperparathyroidism?
In most cases, persistently high calcium levels indicate primary hyperparathyroidism. But we need more information to confirm the diagnosis. To diagnose primary hyperparathyroidism, we check the calcium and PTH together. If something else (not parathyroid disease) is causing the high calcium, then the normal parathyroid glands will be suppressed - that is, they will make very little hormone. Th...