As the LC–MS/MS analysis method characterized by a high specificity and sufficient sensitivity can measure PAs of the concentration range (1 μg/kg to 3 mg/kg) [30]. As the tandem mass spectrometry based on the MRM technique (multiple reaction monitoring transitions) is suitable analysis tec...
2]. The onset of ME/CFS is often connected to viral/bacterial infection [3,4], with the herpesviruses being most implicated [5,6,7]. However,