what is the difference of effect on heart rate between smoked marijuana and orally ingested thc?
The maximal average per cent increase in heart rate after marijuana smoking in the present study was only 22 per cent as opposed to the 55 per cent increase previously reported in healthy, experienced subjects smoking the same quantity of THC (3).
1 However, oral ingestion requires approximately three times more THC than smoking to produce similar effects or highs; therefore, visual detection of the marijuana in the ingested item would seem reasonable, thus ruling out unknown consumption. 2  Retention time of orally ingested marijuana ranges from 1-5 days.