. Author manuscript; available in PMC: 2018 Jul 25.

Published in final edited form as: Chem Res Toxicol. 2018 Feb 28;31(3):168–175. doi: 10.1021/acs.chemrestox.7b00264

Table 3.

Mean Total Nicotine Equivalents, NNAL and the percentages of NNAL glucuronides in 24 h urine from African American and White smokers, Study 2^*

			Glucuronides as percent of total NNAL
	TNE (nmol/ml)	Total NNAL (pmol/ml)	both glucs	N-gluc	O-gluc	Cotinine glucuronidation^b
Whites (n=54)	61.5 (35.3)	1.17 (0.94)	68.3(10.8)	24.9(10.3)	43.3(13.5)	1.41(0.86)
African Americans (n=52)	63.6 (39.9)	1.14(0.60)	64.0(11.3)	14.0(10.8)	50.0(13.7)	0.783(1.40)^*

p^**	0.773	0.873	0.05	<0.00001	0.013	<0.0001

Values are means (SD), cotinine glucuronidation is the ratio of cotinine glucuronide to cotinine

^**

compared between groups using the two-sample t-test for unequal variances.