Plasma DMT concentrations
BLOOD
Plasma levels of DMT were repeatedly assessed at baseline and 2, 5, 10, 20, 29, 32, 37, 40, 50, 60, 80, 100, 120, 150, and 180 min after the beginning of bolus injection of DMT. Blood samples (up to 6 ml) were collected into EDTA tubes, kept on wet ice, and centrifuged within 1h of collection. The harvested plasma was stored at −80°C before being shipped on dry ice to the University of Gothenburg for analysis. Samples were analysed according to a previously published liquid chromatography tandem mass spectrometry method (