The apparent half-life of excretion of cannabinoids was calculated from their concentration in the urine of 27 psychotic patients. The best estimate was about 4 days but the range was too wide to be of use in predicting time to total clearance from the body of any randomly chosen patient.
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References
1.
Dackis, C.A., Pottash, A.L.C., Annitto, W. & Gold, M.S. (1982). Persistence of urinary marijuana levels after supervised abstinence. Am. J. Psychiatry, 139, 1196-1198.
2.
Documenta Geigy, (1975). Eds K. Diem, & C. Lentner.7th edn. Significance limits for r when the population correlation coefficient is zero. p. 61.
