Lysergic Acid Diethylamide (LSD)
- The clearance half-life of LSD averages 3 hours, while the clearance half-life of LSD metabolite averages 12 hours.
- The presence of LSD > LOQ indicates exposure to LSD within 1 day.
- The presence of 2-oxo-3-hydroxy-LSD > LOQ indicates exposure to LSD within 2 to 5 days.
- LSD is metabolized to 2-oxo-3-hydroxy-LSD.
LSD → 2-oxo-3-hydroxy-LSD
Approximate Detection Times
|Lysergic Acid Diethylamide (LSD)||LOQ (ng/mL)||Detection Time* up to|