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).
High levels of phosphate in the blood (hyperphosphatemia) or low levels of phosphate in the blood (hypophosphatemia) : Calcium and phosphate have to be in balance in the body. Taking too much calcium can throw this balance off and cause harm.Donât take extra calcium without your health providerâs supervision.igh levels of phosphate in the blood (hyperphosphatemia) or low levels of phosphate in the blood (hypophosphatemia) : Calcium and phosphate have to be in balance in the body. Taking too much calcium can throw this balance off and cause harm. Donât take extra calcium without your health providerâs supervision.