Use

Beta-2 microglobulin is a low-molecular-weight protein that forms the light chain component of class I histocompatibility antigens. It's primarily eliminated through glomerular filtration and its increased urinary excretion is a marker for proximal tubular renal damage. Conditions like Wilson disease, Fanconi syndrome, and exposure to heavy metals such as cadmium and mercury result in elevated levels, often seen in renal tubular damage evaluation and monitoring of toxic exposures.