Urinary coproporphyrin I/(I + III) ratio as a surrogate for MRP2 or other transporter activities involved in methotrexate clearance.


AIMS The urinary coproporphyrin I/(I + III) ratio may be a surrogate for MRP2 activity. We conducted a prospective study in patients receiving methotrexate (MTX) to examine the relationship between this ratio and the pharmacokinetics of a MRP2 substrate. METHODS Three urine samples were collected from 81 patients for UCP I/(I + III) ratio determination… (More)
DOI: 10.1111/bcp.12326


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