Blood testing provides meaningful clinical insights into vitamin and mineral deficiencies.
the verdict
SUPPORTED
the evidence backs this
confidence 80/100
Blood testing provides robust and clinically meaningful insights into vitamin and mineral deficiencies, serving as the standard matrix for nutritional assessment.
Evidence for · 4
Delayed Processing of Chilled Whole Blood for 24 Hours Does Not Affect the Concentration of the Majority of Micronutrient Status Biomarkers
2021 · cited by 6
Demonstrates that blood is a stable and reliable matrix for assessing various micronutrient status biomarkers like vitamin D, folate, B-12, and iron.
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More for · 3
Micronutrient intake and status of adults consuming plant-based meat analogues or animal-based meats as primary protein source: An 8-week randomized controlled trial.
2026 · cited by 2
Shows that blood biomarkers effectively reflect changes in micronutrient status resulting from dietary intake and supplementation interventions.
Saliva as a Matrix for Primary Care: Feasibility and Scoping of Its Use for Assessment of Nutrition and Inflammation.
2026 · cited by 0
Highlights blood testing as the established clinical standard for assessing nutritional and inflammation status, noting limitations of alternative matrices like saliva.
Current concepts on feeding the critically ill patient: a narrative review.
2026 · cited by 0
Notes that micronutrient deficiencies are common and require structured assessment through biomarkers to guide targeted management.