When you are pregnant, prolactin changes are completely normal. In fact, your prolactin must increase in order to encourage the production of milk in your mammary glands. During pregnancy your hormones are all over the place. In particular, your estrogen levels begin to rise, and this is what stimulates the increase in your prolactin levels.
Hypercalcemia in Cats. Hypercalcemia is characterized by an abnormally high amount of calcium in the blood. A cat is considered hypercalcemic when its total serum calcium level is greater than 10.5 mg/dL.
Quick Answer. High calcium levels in the urine may be due to high vitamin D levels, chronic kidney disease, eating excess calcium, calcium leaks from the kidneys into the urine, sarcoidosis, use of diuretics and excess production of parathyroid hormone, notes the United States National Institutes of Health's MedlinePlus.