The definitive marijuana guide from Cannabis UK
Marijuana-positive urine test results from consumption
of hemp seeds in food products
by
Fortner N, Fogerson R, Lindman D, Iversen T, Armbruster D
ABSTRACT
Commercially available snack bars and other foodstuffs
prepared from pressed hemp seeds were ingested by volunteers. Urine specimens
were collected for 24 h after ingestion of the foodstuffs containing hemp
seeds and tested for marijuana using an EMIT immunoassay and gas chromatography-mass
spectrometry (GC-MS). Specimens from individuals who ate one hemp seed bar
demonstrated little marijuana immunoreactivity, and only one specimen screened
positive at a 20-ng/mL cutoff. Specimens from individuals who ate two hemp
seed bars showed increased immunoreactivity, and five specimens screened
positive at a 20-ng/mL cutoff. A single specimen yielded a quantitative
GC-MS value (0.6 ng/mL), but it failed to meet reporting criteria. Several
specimens from individuals who ate three cookies made from hemp seed flour
and butter screened positive at both 50- and 20-ng/mL cutoffs. Two specimens
produced quantitative GC-MS values (0.7 and 3.1 ng/mL), but they failed
to meet reporting criteria. Several specimens also tested positive with
an FDA-approved on-site marijuana-screening device. Hemp seeds similar to
those used in the foodstuffs did not demonstrate the presence of marijuana
when tested by GC-MS. In this study, ingestion of hemp seed food products
resulted in urine specimens that screened positive for marijuana. No specimens
gave a GC-MS quantitative value above the limit of detection for marijuana.
HOME
Sitemap:
