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. 2014 Jan 8;9(1):e85694. doi: 10.1371/journal.pone.0085694

Figure 1. A typical LC-MS/MS spectrum of blood spots from patients.

Figure 1

Blood samples were prepared and mass spectrometric analysis of individual sample was performed as described in “Methods” in details. Panel A shows a mass spectrum was acquired in the neutral loss scan mode. The scan was range from m/z 140 to m/z 280. It can detect most of the amino acids. Panel B shows a mass spectrum was acquired in the multiple reaction monitor mode. It was mainly used to detect Gly, Orn, Arg, Cit and its internal standard. Panel C shows a mass spectrum was acquired in precursor ion scanning mode. It used to detect the acylcarnitine in the sample.