Reconstructed mass chromatograms (left panel) and product ion spectra (right panel) of Cys34 adducts from N-sulfooxy-PhIP treated human plasma (left panel) of (A) LQQC*[SOPhIP]PF ([M+2H]2+ at m/z 487.2 > 225.1), (B) LQQC*[SOPhIP]PFEDHVK ([M+3H]3+, m/z 527.9 > 225.1), and (C) LQQC*[SO2PhIP]PFEDHVK ([M+3H]3+ at m/z 533.2 > 225.1) and corresponding HCD product ion spectra (right panel), following tryptic/chymotryptic digestion of albumin. tR, Retention time; A, area ion counts of the peak.