Comparison of laboratory values in severe SHPT patients before and after successful PTX. Serum levels of (A) iPTH, (B) P, (C) Ca, (D) ALP, (E) Alb, and (F) Hb pre- and postoperative. Data are mean ± SD (n=17). §P<0.05, *P<0.001. Alb, albumin; ALP, alkaline phosphatase; Ca, calcium; Hb, hemoglobin; iPTH, intact parathyroid hormone; P, phosphorus; PTX, parathyroidectomy; SHPT, secondary hyperparathyroidism.