Marihuana metabolites in urine of man. IV. Extraction procedures using diethyl ether.
D002188:Cannabis / Q000652:urine*; D002855:Chromatography, Thin Layer; D005019:Ethyl Ethers; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008722:Methods
D005019:Ethyl Ethers