Author Affiliations: National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia (email@example.com).
In Reply: More than 20 different TFAs have been reported in human blood,1,2 and the selected 4 TFAs measured in plasma in our study are considered to be the major TFAs.3 The extent to which certain food sources affected blood levels of these 4 TFAs in our population group is not known. Although we agree that such information would be helpful for reasons such as those presented by Mr Brandt, the study did not intend to address this topic.
Vesper HW, Pirkle JL. Trans-Fatty Acid Levels in White Adults—Reply. JAMA. 2012;307(22):2370-2371. doi:10.1001/jama.2012.5148