measurement of total and ionic calcium , magnesium , parathyroid hormone , vitamin d metabolites ( 25-hydroxycholecalciferol , 1,25-dihydroxycholecalciferol ) , and nephrogenous cyclic adenosine monophosphate are especially helpful in the laboratory evaluation of the hypocalcemic patient .
C0030520
parathyroid hormone
C0020598
hypocalcemic