Long‐term evaluation of urinary copper excretion and non‐caeruloplasmin associated copper in Wilson disease patients under medical treatment

Due to their variability, urinary copper excretion rates and serum copper concentrations are less than ideal parameters by which to monitor the benefit of a copper-reducing therapy. Urinary copper excretion rates seem to be more suitable than non-caeruloplasmin associated copper concentrations for this purpose.