Essential water-soluble cofactor
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About Vitamin B5 (Pantothenic Acid)
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About Vitamin B5 (Pantothenic Acid)
Overview and History
Pantothenic acid is a water-soluble B vitamin classified biochemically as a precursor for coenzyme A (CoA) and acyl-carrier proteins. Identified in the early 20th century as essential for growth, its clinical relevance centers on basic metabolic support rather than a single organ system.
Biologically, pantothenic acid is converted into CoA, which participates in the breakdown and synthetic pathways of carbohydrates, fats, and amino acids. CoA-dependent reactions underlie ATP generation, fatty acid synthesis and oxidation, and acetylation reactions that modify many cellular processes.
Interpreting Highs and Lows
Elevated circulating B5 is uncommon; when seen it is often associated with recent oral intake, lab variation, or increased release from tissues during higher cellular turnover. Very high levels may also reflect altered transport or reduced cellular uptake but require corroboration with other markers.
Low B5 levels can be linked to inadequate dietary intake, malabsorption, prolonged diarrhea, or increased metabolic demand. Low values are best interpreted alongside other B vitamins, fatty acid and energy markers, and relevant genetic variants to clarify whether the pattern reflects supply, use, or transport issues.
Featured Test
The Nutrient Zoomer includes Vitamin B5 to evaluate pantothenic acid status and its role in CoA-dependent energy and lipid pathways. Combined with other nutrient levels and nutrient-processing genetics, B5 helps reveal patterns of cellular energy use and metabolic capacity that support more personalized nutritional assessment.
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Mary Beth Augustine
DCN, RDN, FAND- Lead Clinical Educator
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MS, RDN, LD, CTTS, CGP- Clinical Educator
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MSc- MHNE- Clinical Educator
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Adair Anderson
MS, RDN, LDN- Clinical Educator
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DCN, CNS, LDN- Clinical Educator
Jason Barker
ND- Clinical Educator
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ND- Clinical Educator
Dana Filatova
DCN, CNS, LDN- Clinical Educator
Jessy Dhanjal
ND- Clinical Educator
Nour Amri
MS, LDN, CNS, CKNS- Clinical Educator
