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    Did you mean 25-Hydroxyvitamin D?
    Glossary 25-Hydroxyvitamin D

    form of vitamin D measured in blood to assess status

    25-Hydroxyvitamin D, also known as 25(OH)D or Calcifediol, is a form of vitamin D that is measured in the blood to assess a person's vitamin D status. It is produced in the liver from vitamin D3 (cholecalciferol) and is a crucial indicator because it reflects the total amount of vitamin D from both dietary intake and sunlight exposure.

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    1. Vitamin D-dependent rickets type II. Defective induction of 25-hydroxyvitamin D3-24-hydroxylase by 1,25-dihydroxyvitamin D3 in cultured skin fibroblasts. Journal of Clinical Investigation · 1985 · 81 citations
    2. Possible association of female-pattern hair loss with alteration in serum 25-hydroxyvitamin D levels Egyptian Journal of Dermatology and Venereology · 2014 · 11 citations
    3. Serum 25-hydroxy vitamin D3 level in Egyptian patients with alopecia areata 2013 · 14 citations
    4. Extrarenal Expression of 25-Hydroxyvitamin D<sub>3</sub>-1α-Hydroxylase<sup>1</sup> The Journal of Clinical Endocrinology & Metabolism · 2001 · 845 citations
    5. Enhancing 1α-Hydroxylase Activity with the 25-Hydroxyvitamin D-1α-Hydroxylase Gene in Cultured Human Keratinocytes and Mouse Skin Journal of Investigative Dermatology · 2001 · 18 citations
    6. Trichotillomania associated with a 25-hydroxy vitamin D deficiency: A case report The mental health clinician · 2020 · 5 citations
    7. Rickets with alopecia-remission following a course of 1-?-hydroxy vitamin D3 therapy European journal of pediatrics · 1989 · 6 citations
    8. Generation of Genetically Modified Rats Using CRISPR/Cas9 Genome-Editing System to Reveal Novel Vitamin D Actions Medical Research Archives · 2021
    9. Vitamin D and the skin: Focus on a complex relationship: A review Journal of Advanced Research · 2014 · 139 citations
    10. Segmental analysis of human hair reveals intra-annual variation in 25(OH)D3 concentrations in modern and archaeological individuals Scientific Reports · 2025
    11. Evaluation of serum vitamin D3 before and after intralesional injection of vitamin D3 in patients with alopecia areata 2025
    12. Vitamin D‐dependent rickets type I and type II Pediatrics International · 1997 · 57 citations
    13. Vitamin D and the Parenteral Nutrition Patient Gastroenterology · 2009 · 23 citations
    14. The role of anemia and vitamin D levels in acute and chronic telogen effluvium Turkish Journal of Medical Sciences · 2011 · 11 citations
    15. Study of vitamin D deficiency in patients with alopecia areata attending a dermatology center in Iran International Journal of Dermatology · 2021 · 1 citations
    16. Cardiometabolic Risk Factors in Atorvastatin-Treated Women with Euthyroid Autoimmune Thyroiditis Pharmacology · 2023 · 4 citations
    17. Vitamin D Concentrations are Decreased in Patients with Alopecia Areata Vitamins & Trace Elements · 2012 · 54 citations
    18. Risk factors and lipid metabolism characteristics of early‐onset male androgenetic alopecia: A pilot study Journal of cosmetic dermatology · 2024
    19. Rickets with Alopecia Signals Vitamin D Dependent Rickets Type II Journal of Nepal Paediatric Society · 2016 · 1 citations
    20. PERAN SUPLEMENTASI VITAMIN D PADA TATA LAKSANA SARKOIDOSIS KUTIS Media Dermato Venereologica Indonesiana · 2023
    21. Evaluation of Serum Level of Vitamin D in Patients with Female Pattern Hair Loss Thesis Journal of advances in medicine and medical research · 2021
    22. Association of DNA damage with vitamin D and hair heavy metals of obese women 2021 · 1 citations
    23. Gender difference in relationship between serum ferritin and 25-hydroxyvitamin D in Korean adults PLOS ONE · 2017 · 10 citations
    24. Reduced level of 25-hydroxyvitamin D in chronic/relapsing Alopecia Areata Dermato-endocrinology · 2013 · 40 citations
    25. The association between serum ferritin and 25-hydroxyvitamin D and metabolic syndrome in Korean women: the Korea National Health and Nutrition Examination Survey 2010–2012 Journal of Clinical Biochemistry and Nutrition · 2017 · 7 citations
    26. Increased 25(OH)D3 level in redheaded people: Could redheadedness be an adaptation to temperate climate? Experimental dermatology · 2020 · 5 citations
    27. Distribution of 1,25-dihydroxyvitamin D3[22-oxa] in vivo receptor binding in adult and developing skin Archives of dermatological research · 1995 · 15 citations
    28. Serum 1, 25-dihydroxy vitamin D- vitamin D3- among obese Egyptian women with polycystic ovary syndrome Obstetrics and Gynecology Reports · 2020 · 4 citations
    29. Serum 25-Hydroxy Vitamin D Level in Patients with Alopecia Areata and Its Relationship with Severity of the Disease Journal of Dhaka Medical College · 2025
    30. Evidence for 1,25-Dihydroxyvitamin D3-independent Transactivation by the Vitamin D Receptor 2007 · 36 citations