PMC3396753_01
Timeline of changes in serum 25-hydroxyvitamin D [25(OH)D]; 1,25-dihydroxyvitamin D [1,25(OH)2D]; parathyroid hormone (PTH); calcium (Ca), (- -); and phosphorus (PO4) (- -).
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Serum 25-hydroxyvitamin D [25(OH)D] was markedly elevated (422 ng/mL, reference range 30 - 100 ng/mL), 1,25-dihydroxyvitamin D [1,25(OH)2D] was normal (61 pg/mL, reference range 27 - 71 pg/mL) and parathyroid hormone (PTH) was suppressed (<3 pg/mL, reference range 15 - 65 pg/mL), (Figure 1). There was a steady decline in serum 25(OH)D and return of PTH to normal, and calcium and phosphorus levels remained normal throughout the follow-up period (Figure 1).