Beta-2-Microglobulin/Creatinine:MRto:24H:Urine:Qn
beta-2-microglobulin/creatinine:mrto:24h:urine:qn
Beta-2-Microglobulin/Creatinine:Mass Ratio:24 hours:Urine:Quantitative
beta-2-microglobulin/creatinine:mass ratio:24 hours:urine:quantitative