Multiple features for narrow RT range February 01, 2018, 07:15:14 AM Hello there, We have a question in regards to XCMS feature selection. Upon preprocessing of QTOF data XCMS spits out a results table that shows multiple features across very narrow bands of RT ranges. For example 30 different features (though often closely related ones) at a RT of 4.3 minutes. Another 15 for 4.5 minutes etc...We've tried various preprocessing settings, but this doesn't change feature selection dramatically. What could be going wrong? Thanks.