Proteomics is the analysis of the entire protein complement of a cell or organism under defined conditions. It relies on fractionating protein mixtures, mass spectrometry to identify proteins, and bioinformatics. Forensic science applies science to criminal law by analyzing scientific evidence. Proteomics can analyze proteins from samples like hair and teeth to deduce DNA sequences and identify individuals or determine their sex, even from degraded samples where DNA is limited. It has applications in human identification, species identification, and doping analysis from various tissues and biofluids.