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. Author manuscript; available in PMC: 2009 Aug 26.
Published in final edited form as: J Nucl Med. 2007 Sep 14;48(10):1724–1732. doi: 10.2967/jnumed.107.040279

TABLE 3.

Comparison of Fraction of Total 11C in Plasma That Is Present as Parent Radiotracer at Different Times After Injection

Time
(min)		 11C-d-methamphetamine
(n = 9)		 11C-l-methamphetamine
(n = 3)		 P
2 93 ± 2.4 95 ± 2 NS
5 83 ± 5 89 ± 2.3 0.06
10 69.9 ± 6.8 82.3 ± 3.5 0.01
20 53.4 ± 8.5 72 ± 6.2 0.006
30 44.4 ± 8.5 67 ± 9.6 0.003
60 32.3 ± 7.7 58.7 ± 13.05 0.002
90 26.9 ± 6.4 49 ± 17 0.01

NS = not statistically significant.