Abstract:Acute kidney injury (AKI) is a common complication during hospitalization and is associated with an increased risk of chronic kidney disease (CKD) and new or worsening proteinuria. Assessment of proteinuria after AKI provides prognostic information that helps risk-stratify patients for progressive CKD and identifies patients who may derive greatest benefit from kidney-protective therapies, such as renin-angiotensin-aldosterone system inhibitors (RAASi) and sodium-glucose cotransporter-2 inhibitors (SGLT2i). We sought to characterize predictors of proteinuria testing within a year after AKI. Despite guidelines recommending post-AKI proteinuria assessment, only 6–28% of AKI survivors have this checked at 3 months after discharge. Understanding of factors associated with post-AKI proteinuria assessment can inform implementation efforts to improve this metric.