Amino beta guanidinopropionate/Creatinine:SRto:24H:Urine:Qn
amino beta guanidinopropionate/creatinine:srto:24h:urine:qn
Amino beta guanidinopropionate/Creatinine:Substance Ratio:24 hours:Urine:Quantitative
amino beta guanidinopropionate/creatinine:substance ratio:24 hours:urine:quantitative