Np. Cassells et Dh. Craston, THE EFFECTS OF COMMONLY USED ADULTERANTS ON THE DETECTION OF SPIKED LSD BY AN ENZYME-IMMUNOASSAY, Science & justice, 38(2), 1998, pp. 109-117
The effects of 15 chemicals and household agents on an enzyme immunoas
say (EIA) for LSD were investigated. The presence of many of these was
detected by pH and specific gravity measurements and by sample inspec
tion. A number of agents caused false positives in the assay at 10% ad
ulteration, but only two produced false positive results at 1%. Adulte
rated samples spiked with LSD produced no false negatives, demonstrati
ng that none of the adulterants tested were able to conceal the presen
ce of LSD by interfering with the EIA. The assay is shown to be a robu
st method for the screening of urine for LSD when used in conjunction
with sample inspection and a sound confirmatory method.