The research protocol must give a clear indication of what follow up will be provided to the research participants and for how long. This may include a follow u, especially for adverse events, even after data collection for the research study is completed.
The two most important hormones for maintaining calcium levels in the body are parathyroid hormone (PTH) and 1,25(OH)2D (the active form of vitamin D).The major regulator is PTH, which is part of a negative feedback loop to maintain [Ca ++ ] ECF (see Humoral regulation).he two most important hormones for maintaining calcium levels in the body are parathyroid hormone (PTH) and 1,25(OH)2D (the active form of vitamin D).
Increased PTH causes the bones to release their calcium into the blood. When the calcium in our blood goes too high, normal parathyroid glands STOP making PTH--they shut down. Calcium is the most important element for the nervous system, the muscular system, and the skeletal system.lthough the parathyroid glands are located next to (and sometimes inside) the thyroid gland, they have no related function. The thyroid gland regulates the bodys metabolism and has no effect on calcium levels while parathyroid glands regulate calcium levels and have no effect on metabolism.