RT Book, Section A1 Arora, Nayan A1 Jefferson, J. Ashley A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. A2 McQuaid, Kenneth R. SR Print(0) ID 1193125108 T1 Hypocalcemia T2 Current Medical Diagnosis & Treatment 2023 YR 2023 FD 2023 PB McGraw-Hill Education PP New York, NY SN 9781264687343 LK accessmedicine.mhmedical.com/content.aspx?aid=1193125108 RD 2024/04/24 AB ESSENTIALS OF DIAGNOSISUsually asymptomatic but can cause cramps or tetany if severe.Decreased serum parathyroid hormone (PTH), vitamin D, or magnesium levels.Despite a low total serum calcium, calcium metabolism is likely normal if ionized calcium level is normal.