In the article titled “Vitamin D-Binding Protein Clearance Ratio Is Significantly Associated with Glycemic Status and Diabetes Complications in a Predominantly Vitamin D-Deficient Population” [1], the mention of “radioimmunoassay” in the Materials and Methods was incorrect, where the sentence “Serum vitamin 25 (OH) D was measured by radioimmunoassay on Cobas e411.” should be corrected to “Serum vitamin 25 (OH) D was measured by electrochemiluminescence immunoassay on Cobas e411.” Here, GC is linked to diabetes mellitus.