Possession Amounts and Limited Immunity
The Missouri Good Samaritan Law, provides a limited immunity that only applies to a person possessing the following amounts:
(1) Less than three grams of a substance containing heroin;
(2) Less than three grams of a substance containing cocaine;
(3) Less than three grams of a substance containing morphine;
(4) Less than forty grams of a substance containing peyote;
(5) Less than forty grams of a substance containing a derivative of barbituric acid or any of the salts of a derivative of barbituric acid;
(6) Less than forty grams of a substance containing amphetamine or any salt of an optical isomer of amphetamine;
(7) Less than three grams of a substance containing lysergic acid diethylamide (LSD), or an analog thereof;
(8) Less than six grams of a substance containing pentazocine or any of the salts, isomers, and salts of isomers of pentazocine, or an analog thereof;
(9) Less than six grams of a substance containing methaqualone or any of the salts, isomers, and salts of isomers of methaqualone;
(10) Less than six grams of a substance containing phencyclidine (PCP) or any of the salts, isomers, and salts of isomers of phencyclidine (PCP);
(11) Less than six grams of a substance containing ketamine or any of the salts, isomers, and salts of isomers of ketamine;
(12) Less than forty grams of a substance containing a substance classified as a narcotic drug in Schedule I or II, or an analog thereof, which is not otherwise included in this subsection; or
(13) Less than forty grams of an imitation controlled substance.