25-Hydroxy Vitamin D Test: Purpose, Procedure, and Results
网页2024年6月7日 · The 25-hydroxy vitamin D test is the best way to monitor vitamin D levels. The amount of 25-hydroxyvitamin D in your blood is a good indication of how much vitamin D your body has. The test can...
1,25-Dihydroxyvitamin D, Serum - Mayo Clinic Laboratories ...
网页The 25-hydroxyvitamin D test (25HDN / 25-Hydroxyvitamin D2 and D3, Serum) in serum the preferred initial test for assessing vitamin D status and most accurately reflects the body's vitamin D stores. In the presence of renal disease or hypercalcemia, testing of 1,25-dihydroxy vitamin D (DHVD) might be needed to adequately assess vitamin D status.
What to expect from a 25-hydroxy vitamin D test - Medical News Today
网页2020年7月16日 · A 25-hydroxy vitamin D test measures how much vitamin D is in someone's blood. Learn what to expect, what the results mean, and how to boost vitamin D levels.
25-hydroxy vitamin D test - Mount Sinai Health System
网页The 25-hydroxy vitamin D test is the most accurate way to measure how much vitamin D is in your body. Vitamin D helps regulate calcium and phosphate levels in the body.
Understanding the Forms of Vitamin D: Vitamin D3, 25 (OH)D, and 1,25 …
网页2023年11月16日 · Vitamin D is predominantly transported to the liver, where 25-hydroxylation occurs to form 25 (OH)D (calcifediol)—the precursor for 1,25 (OH)2D (calcitriol). Vitamin D and 25 (OH)D also get into peripheral target cells, which are hydroxylated to form calcitriol, as illustrated in the diagram above.
25-Hydroxyvitamin D2 and D3, Serum - Mayo Clinic Laboratories ...
网页25-Hydroxyvitamin D2 and D3 (25-OH-VitD) are equipotent steroid hormones that require 1-alpha-hydroxylation before expressing biological activity. Vitamin D compounds are derived from dietary ergocalciferol (from plants, VitD2), cholecalciferol (from animals, VitD3), or by conversion of 7-dihydrocholesterol to VitD3 in the skin upon UV exposure.
25-hydroxy vitamin D test - MedlinePlus
网页2022年4月29日 · 25 hydroxy vitamin D2 (ergocalciferol) is the vitamin D that you have absorbed from foods fortified with plant vitamin D or from an ergocalciferol supplement. …
Vitamin D, 25-Hydroxy - Labcorp
网页This highly automated test measures both D 2 and D 3 together and reports a total 25-hydroxy vitamin D. Major clinical studies, including (but not limited to) the Centers for Disease Control (CDC) National Health and Nutrition Examination Survey (NHANES) data base, the Women's Health Initiative (WHI) Studies, and the Harvard-Based Health ...
Overview of vitamin D - UpToDate
网页2023年9月8日 · Vitamin D is converted enzymatically in the liver to 25-hydroxyvitamin D (25 [OH]D), the major circulating form of vitamin D, and then in the kidney to 1,25-dihydroxyvitamin D, the active form of vitamin D. Vitamin D and its metabolites have a significant clinical role because of their interrelationship with …
Vitamin D Dosing: Basic Principles and a Brief Algorithm (2021 …
网页2021年12月10日 · If low vitamin D status is confirmed, an appropriate, large enough vitamin D dose must be suggested for supplementation, and the next check of serum 25-hydroxy-vitamin D levels should be advised after the treatment in order to evaluate treatment results and choose the right tactic regarding further supplementation.