Indicator Explainer
Ascorbic Acid
A natural water-soluble vitamin (Vitamin C). Ascorbic acid is a potent reducing and antioxidant agent that functions in fighting bacterial infections, in detoxifying reactions, and in the formation of collagen in fibrous tissue, teeth, bones, connective tissue, skin, and capillaries. Found in citrus and other fruits, and in vegetables, vitamin C cannot be produced or stored by humans and must be obtained in the diet. (NCI04)
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C285. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-19. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Ascorbic Acid (C285)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C285. NCI definition, reproduced without modification under CC BY 4.0.
- Liposomal co-delivery of astaxanthin and ascorbic acid: Synergistic regulation of myofibrillar protein interactions and oxidative stability. — Int J Biol Macromol, 2026-10-09 (PMID 42855098; literature)
- Impact of Ascorbic Acid and Exercise on Accuracy of a Glucose Monitoring System with GDH-FAD Technology in Adult Patients with Type 1 Diabetes Mellitus: A Double-Blinded, Randomized Trial. — Diabetes Ther, 2026-10-09 (PMID 42853347; literature)
- Moderate Water Deficit Improves Tomato Fruit Nutritional Quality Through SlNAP2-Mediated Transcriptional Activation of Lycopene and Ascorbic Acid Biosynthesis Genes. — Plant Cell Environ, 2026-10-14 (PMID 42870713; literature)
- Ropivacaine-and ascorbic acid-loaded thermosensitive hydrogels for pain management. — Biomed Mater, 2026-10-13 (PMID 42869086; literature)
- Corrigendum to "Phase IB trial of high dose ascorbic acid + nab-paclitaxel + cisplatin + gemcitabine in patients with untreated metastatic pancreatic cancer" [Redox Biol. 88 (2025) 103895]. — Redox Biol, 2026-10-16 (PMID 42888162; literature)
- A mild, effective, and green micro-dissolution treatment for wool fiber using choline-ascorbic acid NADES. — PLoS One, 2026-10-16 (PMID 42886744; literature)
- SlMYBS3L-SlERF.E4-SlGGP1 mediates the accumulation of ascorbic acid in tomato promoted by organic nutrient solution. — Plant Physiol Biochem, 2026-10-21 (PMID 42933292; literature)