RT Book, Section A1 Kecskes, Susan A. A2 Tenenbein, Milton A2 Macias, Charles G. A2 Sharieff, Ghazala Q. A2 Yamamoto, Loren G. A2 Schafermeyer, Robert SR Print(0) ID 1155427977 T1 Hypo- and Hypercalcemia Abnormalities T2 Strange and Schafermeyer's Pediatric Emergency Medicine, 5e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259860751 LK accesspediatrics.mhmedical.com/content.aspx?aid=1155427977 RD 2024/04/23 AB Less than one percent of the body’s calcium is in the circulation.Only the ionized form of circulating calcium is physiologically active.Parathyroid hormone (PTH), vitamin D, and calcitonin are the hormones that control calcium levels.IV calcium can be given as calcium chloride or calcium gluconate but the mg doses are different.IV calcium is very irritating to tissues and veins.