Al-Dirbashi OY, K?lker S, Ng D, Fisher L, Rupar T, Lepage N, Rashed MS, Santa T, Goodman SI, Geraghty MT, Zschocke J, Christensen E, Hoffmann GF, Chakraborty P. Diagnosis of glutaric aciduria type 1 by measuring 3-hydroxyglutaric acid in dried urine spots by liquid chromatography tandem mass spectrometry. J Inherit Metab Dis. 2011 Feb; 34(1):173-80.