Red blood cell δ15N: a novel biomarker of dietary eicosapentaenoic acid and docosahexaenoic acid intake

Abstract

The results strongly support the validity of RBC delta(15)N as a biomarker of EPA and DHA intake. Because the analysis of RBC delta(15)N is rapid and inexpensive, this method could facilitate wide-scale assessment of EPA and DHA intake in clinical and epidemiologic studies.