CE	collision energy
CNS	central nervous system
CSF	cerebrospinal fluid
CV	coefficient of variation
DMSO	dimethyl sulfoxide
ESI	electrospray ionization
FA	formic acid
HPLC	high-performance liquid chromatography
HQC	high quality control
IS	internal standard
LC-MS/MS	liquid chromatography-tandem mass spectrometry
LLOQ	lower limit of quantification
LOQ	low quality control
ME	matrix effect
MF	matrix factors
MQC	medium quality control
MRM	multiple reaction monitoring
MRSA	methicillin-resistant Staphylococcus aureus
PRSP	penicillin-resistant Streptococcus pneumoniae
QC	quality control
RE	relevant error
SNR	signal-to-noise ratio
ULOQ	upper limit of quantification
VRE	vancomycin-resistant enterococci