18-Hydroxycortisol/Creatinine:MRto:24H:Urine:Qn
18-hydroxycortisol/creatinine:mrto:24h:urine:qn
18-Hydroxycortisol/Creatinine [Mass Ratio] in 24 hour Urine
18-hydroxycortisol/creatinine [mass ratio] in 24 hour urine