Research
Micronutrients & recovery
Plasma alkylresorcinol (AR) concentrations serve as a valid short-to-medium term biomarker for whole grain wheat and rye intake, with reproducibility demonstrated over multiple time points.
Plasma alkylresorcinol (AR) levels can objectively verify recent whole grain wheat and rye consumption. This biomarker is more reliable than self-report for tracking whole grain intake.
GoodSupportsHIGH confidence
Total plasma AR increases with whole grain intake and decreases with refined bread intake after one week... Fasting plasma AR demonstrated high to moderate reproducibility, ICC>0.88
Why this rating
High reproducibility (ICC>0.88) and correlation with intake (r=0.58) across multiple studies.
Source
Dietary biomarkers: advances, limitations and future directions
Valisa E. Hedrick et al. · Nutrition Journal · 2012
DOI 10.1186/1475-2891-11-109
narrative_reviewCited 261×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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