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).
Calcium is an essential body mineral, but excessive calcium can be harmful. About 99% of the body's calcium are stored in the bones. The rest is located in the blood and tis â¦ sue fluids.Calcium is necessary for blood clotting, containing cells, and neuromuscular functions.ithout the proper secretion of calcitonin, hypercalcemia occurs; a harmful rise in blood calcium level. Hypercalcemia can lead to kidney stones because the urinary system retains calcium, additionally increasing blood calcium levels.