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Journal of Analytical Methods in Chemistry
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Journal of Analytical Methods in Chemistry
/
2012
/
Article
/
Tab 1
/
Research Article
Enzymatic Digestion and Selective Quantification of Underivatised Delta-9-Tetrahydrocannabinol and Cocaine in Human Hair Using Gas Chromatography-Mass Spectrometry
Table 1
Summary of assay validation results.
Compounds
Recovery (%) at 0.5 ng/mg (
𝑁
=
6
)
Concentration (ng/mg)
Precision RSD (%)
Accuracy (%)
Intraday
𝑛
=
6
per each
Interday
𝑛
=
1
8
per each
Δ
9
-THC
0.02
15.4
18.0
114
0.10
15.6
7.0
110
102.2
0.50
8.0
5.0
95
Cocaine
0.05
12.1
10.6
98
0.10
10.1
12.1
101
96.5
0.50
5.1
2.8
110