ibuprofen metabolite

Enhance LC–MS determination of drug metabolites in urine using ultraFAIMS Enhance LC–MS determination of drug metabolites in urine using ultraFAIMSThe addition of an ultraFAIMS pre-separation stage into the electrospray ionisation (ESI) source of an LC-ESI-MS improves the qualitative and quantitative of analysis of drug metabolites such as (R/S) ibuprofen 1-beta-O-acyl glucuronide (IAG) in urine, giving lower LOQ, increased LDR, better reproducibility, reduced matrix chemical noise.