familial primary hypomagnesemia with normocalcuria GARD:0025121 Familial primary hypomagnesemia with normocalcuria (FPHN) is a form of familial primary hypomagnesemia (FPH) which is characterized by low magnesium values but normal calcium values in the serum. The disorder consists of three distinct forms which are: autosomal recessive primary hypomagnesemia with normocalcuria and hypocalcemia (ARPHN), familial primary hypomagnesemia with normocalcuria and normocalcemia (FPHNN) and isolated autosomal dominant hypomagnesemia, Glaudemans type. MONDO:0017626 Orphanet:306522 familial primary hypomagnesemia