Comparison of two methods for measuring 25-OH vitamin D in the follow-up of patients after bilio-pancreatic diversion bariatric surgery
Keywords: ECLIA = Electro-chemiluminescence immunoassay; BPD = Bilio-pancreatic diversion; Total vitamin D; Total 25-OH-D = 25-OH-D including epimers = 25-OH-D3 + 25-OH-D2 + C3-epimer-25-OH-D3 + C3-epimer-25-OH-D2 (As measured by the LC-MS / MS method