How long does LSD stay in your system?
A powerful hallucinogen, LSD can stay in your system and be detected up to 5 days after use. Although it is not physically addictive, LSD use can lead to repeated dosing and psychotic effects. More on what happens in the body when you take LSD below.
What is LSD used for?
People take LSD as a hallucinogen and for its ability to alter human perception and mood. LSD is taken mainly orally, although the potency of liquid LSD in dropper bottles may vary because the liquid is water based. LSD can be also inhaled, injected, and applied to the skin.
Peak levels and half life of LSD
LSD has a plasma half-life of 2.5-4 hours. The onset of LSD effects is rapid following intravenous administration (10 minutes) and slower when taken orally (20-30 minutes). LSD effects usually peak at 2-4 hours and gradually diminishing over 6-8 hours. Residual effects may last longer but usually resolve within 12 hours of dosing.
LSD drug testing
In order to test positive for most types of drugs, at least two criteria must be met:
1. The sample must be positive by the screening test above a set cutoff level
2. The sample must be positive by a confirmation test above a set cutoff level
However, recreational drugs like LSD that have no approved medical use are not tested within therapeutic ranges. Therefore, cutoff concentrations for LSD drug tests are set low: micro detection limits and/or concentrations that are likely to be reached 24 hours after use of a typical dose of the drug (0.5-55 ng/mL). How long does LSD stay in the body? LSD can be detected in urine within 2-5 days of use.
LSD and addiction
Addiction is a state of physical dependence marked by increased tolerance to a drug combined with physiological withdrawal symptoms when the drug is reduced or withheld from the system.
Addiction and dependence on LSD are possible, although rare. Firstly, tolerance to LSD develops rapidly, but also dissipates rapidly. Tolerance to the behavioral effects of LSD develops rapidly after 3-4 consecutive daily doses. And then sensitivity returns to baseline after 3 to 4 days of abstinence.
Secondly, use of LSD DOES NOT cause patterns of repetitive use over prolonged periods. In fact, the most common psychedelic-use pattern is the occasional trip, separated by intervals of weeks or months. So although long term dependence on LSD can cause psychological and social damage, incidences of physical dependence are rare.
Problems with LSD?
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Reference sources: Drug Courts Research Series Drug Testing in a Drug Court Environment
National Higway Traffic and Safety Administration Drug and Human Performance Fact Sheets on Lysergic Acid Diethylamide (LSD)
Unfavourable Reactions to LSD: A Review and Analysis of the Available Case Reports
Guidelines for research on drugged driving
Comparison of EMIT II, CEDIA, and DPC RIA assays for the detection of lysergic acid diethylamide in forensic urine samples
PubChem Lysergic Acid Diethylamide – Compound Summary
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