Toward Noninvasive Diagnosis of IgA Nephropathy: A Pilot Urinary Metabolomic and Proteomic Study

Table 2

Selected reaction monitoring transitions of compounds derivatized with 3-aminopyridyl-N-hydroxysuccinimidyl carbamate reagent.

Analyte	SRM transition	CID energy [eV]
o-Tyrosine		15
3-Chlorotyrosine		16
3-Nitrotyrosine		14
8-Hydroxyguanosine		15
8-Hydroxy-2′-deoxyguanosine		15

Q1, precursor ion; Q3, product ion; SRM, selected reaction monitoring; CID, collision-induced dissociation.