| abstract |
Methods, labeling reagents, sets of labeling reagents, and labeling techniques are provided for relative quantification, absolute quantification, or both of ketone or aldehyde compounds, including but not limited to analytes including steroids or ketosteroids. The The analyte may be a medical compound or a pharmaceutical compound within the biological matrix. Methods for labeling, analyzing, and quantifying ketone or aldehyde compounds are also disclosed as methods that also use mass spectrometry. |