Phencyclidine

Studies on sweat PCP testing are limited. Using radioactive PCP, Perez-Reyes et al. (90) found that PCP is excreted in sweat. After intravenous administration, PCP was detectable in sweat for 54 h. PCP was found to be highly concentrated in sweat as compared to blood during heavy exercise.

Table 8

Effects of Various Adulterants on Sweat Patch Content of Heroin, Morphine or Codeine

Adulterant Heroin EIA Heroin GC-MS Morphine GC-MS Codeine GC-MS

% Recovery % Recovery % Recovery % Recovery

Saline

103

111

87

93

Bleach

111

100

80

92

Hand soap no. 1

90

91

90

95

Hand soap no. 2

105

111

84

98

Liquid detergent

171

100

88

82

Tile cleaner

200

57

56

93

Drano

123

57

85

86

Vinegar

104

105

90

95

Sugar solution

95

109

83

95

Spot remover

136

59

83

92

Cranberry juice

89

106

91

91

Visine

73

103

88

93

Orange juice

86

113

84

90

Soda soft drink

104

108

85

96

Cough

152

105

87

91

medication

Topical

81

103

90

92

analgesic lotion

Mouthwash

115

106

87

94

Distilled water

85

114

91

105

GC-MS, gas chromatography mass spectrometry The patches were spiked with a 15ng/mL of drug. Bolded values indicate potential for false-positive or false-negative results due to adulterant (83).

GC-MS, gas chromatography mass spectrometry The patches were spiked with a 15ng/mL of drug. Bolded values indicate potential for false-positive or false-negative results due to adulterant (83).

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