The urinary alpha-1-microglobulin (α1m) test evaluates particularly proximal tubule resorption. Hepatocytes synthesize this protein, freely filtered across the glomerulus, and subsequently avidly reabsorbed by the proximal tubule. This test helps Healthcare professionals detect impaired tubular reabsorption, acute kidney injury (AKI), chronic kidney damage, and the need for dialysis post-non oliguric AKI.