Patent ID: 8012764

Claim:
A method of mass spectrometry comprising: providing a first sample comprising a first mixture of components, molecules or analytes; providing a second different sample comprising a second mixture of components, molecules or analytes; and probabilistically determining or quantifying the relative intensity, concentration or expression level of a component, molecule or analyte in said first sample relative to the intensity, concentration or expression level of a component, molecule or analyte in said second sample; wherein said first sample and said second sample comprise a plurality of different biopolymers, proteins, protein digest products, peptides, fragments of peptides, polypeptides, oligionucleotides, oligionucleosides, amino acids, carbohydrates, sugars, lipids, fatty acids, vitamins, hormones, portions or fragments of DNA, portions or fragments of cDNA, portions or fragments of RNA, portions or fragments of mRNA, portions or fragments of tRNA, polyclonal antibodies, monoclonal antibodies, ribonucleases, enzymes, metabolites, polysaccharides, phosphorolated peptides, phosphorolated proteins, glycopeptides, glycoproteins or steroids.