A fast and efficient SPE sorbent, Strata-X PRO, was chosen to extract a panel of acids, neutrals, and bases from plasma to reduce the number of steps in the clean-up.
Ultrahigh-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) tracks blood metabolite changes after repetitive transcranial magnetic stimulation (rTMS)-cognitive training therapy.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.