Liquid Chromatography Mass Spectrometry (LC-MS/MS)

Gas Chromatography (GC)

High Pressure Liquid Chromatography (HPLC)

Isotope Ratio Mass Spectrometry (IRMS)

13C/12C and 15N/14N ratios by elemental analysis (EA-IRMS)

13C/12C ratio by gas chromatography with combustion (GC-C-IRMS)

2H/1H, 13C/12C, 15N/14N, or 18O/16O  ratios using the GasB

MALDI-TOF/TOF

Immunoassays