General Medicine General ab4dc616 True about Serum calcium are all except A 25% of the serum calcium is in ionized form B Total serum calcium levels range from 8.5 to 10.5 mg/dL C Ionized calcium levels range from 4.4 to 5.2 mg/dL D For each gram alteration of serum albumin there is a 0.8 mg/dL increase or decrease in protein-bound calcium