The urine of newborns can be screened for<unk>  using mass spectrometry, allowing for early diagnosis. Elevations of isovalerylglycine in urine and of isovalerylcarnitine in plasma are found.
Isovaleric acidemia
Galactosemia
D-Glyceric acidemia
Pipecolic acidemia
Pentosuria
Hyperammonemia
Histidinemia
Organic acidemia