Background: Hypovitaminosis D is highly prevalent in chronic kidney disease (CKD). This conditionmay increase CKD progression and cause various complications, since kidney has a pivotal role in metabolizing the vitamin D. The aim of this study was to find the difference in vitamin D levels among CKD stage 3 to 5. Methods: A cross-sectional study involving patients aged over 18 years with CKD stage 3 to 5 who visited Dr.