<unk> <unk>  is an<unk>  method in mass spectrometry that is used for the analysis of protein mixtures.<unk>  is typically used with time-of-flight mass spectrometers and is used to detect proteins in tissue samples, blood, urine, or other clinical samples. Comparison of protein levels between patients with and without a disease can be used for biomarker discovery.
Surface-enhanced laser desorption/ionization
Laser-induced breakdown spectroscopy
Enzyme linked immunosorbent assay 
Fourier transform spectroscopy
Quantitative proteomics
Fluorescence in situ hybridization
Enzyme assay
Polymerase chain reaction