Inclusion Criteria:  Received ≥2 sessions of any dialysis modality for presumed AKI Plans for continued intermittent hemodialysis or sustained low efficiency dialysis treatments  Exclusion Criteria:  Receipt of dialysis for ≥90 days Known baseline estimated glomerular filtration rate (eGFR) <15mL/min/1.73m2 Strong clinical suspicion of urinary tract obstruction, rapidly progressive glomerulonephritis (RPGN), vasculitis, thrombotic microangiopathy (TMA), myeloma related cast nephropathy, or acute interstitial nephritis (AIN) as the underlying cause of AKI Receipt of any dialysis prior to the current admission within the past 2 months Kidney transplant within the past 12 months Pregnant