['Although health care-related distrust may contribute to racial disparities in health and health care in the US, current evidence about racial differences in distrust is often conflicting, largely limited to measures of physician trust, and rarely linked to multidimensional trust or distrust.', 'To test the hypothesis that racial differences in health care system distrust are more closely linked to values distrust than to competence distrust.', 'Cross-sectional telephone survey.', 'Two hundred fifty-five individuals (144 black, 92 white) who had been treated in primary care practices or the emergency department of a large, urban Mid-Atlantic health system.', 'Race, scores on the overall health care system distrust scale and on the 2 distrust subscales, values distrust and competence distrust.', 'In univariate analysis, overall health care system distrust scores were slightly higher among blacks than whites (25.8 vs 24.1, p = .05); however, this difference was driven by racial differences in values distrust scores (15.4 vs 13.8, p = .003) rather than in competence distrust scores (10.4 vs 10.3, p = .85). After adjustment for socioeconomic status, health/psychological status, and health care access, individuals in the top quartile of values distrust were significantly more likely to be black (odds ratio = 2.60, 95% confidence interval = 1.03-6.58), but there was no significant association between race and competence distrust.'] Do differences in the patterns of health care system distrust between blacks and whites?