The 25-hydroxy vitamin D test is designed to check the concentration of vitamin D in the blood, as this vitamin is important for regulating calcium and phosphorus levels in the body. Know to serve vitamin D.
This test is usually requested by your doctor to monitor vitamin D recovery treatment when there are signs and symptoms related to bone descaling, such as muscle pain and weakness, for example, if most cases calcium, PTH, and blood are compatible.
- The vitamin D test is primarily done to diagnose vitamin D deficiency in addition to hypervitaminosis D.
- However.
- Your doctor may also order this test for signs and symptoms of bone descaling.
- As vitamin D is the factor responsible for regulating calcium and phosphorus concentration.
- As well as promoting water mineralization.
This test is also requested to control vitamin D replacement therapy and assist in the differential diagnosis of rickitism, osteoporosis and osteomalacia, which is a disease characterized by very fragile and broken adults. In addition to vitamin D-based medication, you may also request an evaluation of calcium, hormone and phosphorus levels in your blood, which is also related to the bone formation process.
In addition to being indicated to investigate hypo and hypervitaminosis and bone disorders, the vitamin D test is also requested in individuals considered a risk group, over 60 years of age, who have a contraindication for sun exposure, who are not regularly exposed to the sun. , pregnant and lactating women, people with endocrine disorders, people with kidney failure or malabsorption syndrome or people undergoing treatment who may interfere with the formation and degradation of this vitamin.
This indication exists because this group of people has an increased risk of developing complications related to changes in levels of this vitamin, which is important for regular monitoring and treatment according to medical indications, which is often due to vitamin D supplementation
No specific preparation is needed to complete the test, the test is done by removing a small blood sample, which is sent to the lab for testing.
Vitamin D is produced from a cholesterol-derived substance in the skin that, when stimulated by ultraviolet light from sunlight, is converted into cholesterol, known as vitamin D.
Vitamin D is produced by metabolizing the liver, transforming it into 25-hydroxyvitamin D, which in the kidneys, under the influence of parathormone, becomes 1. 25-dihydroxyvitamin D, which corresponds to its active and stable form. Vitamin D is responsible for increasing calcium absorption in the gut and thus increasing the concentration of calcium in the blood.
Vitamin D forms can be quantified because the quantification of 25-hydroxyvitamin D is used to identify vitamin D deficiency, although 1. 25-dihydroxyvitamin D is typically requested in people with diseases. Kidneys.
Based on the results of the drug 25-hydroxyvitamin D, it is possible to indicate that the person has enough vitamin D circulating in the blood to maintain bone health. Reference values for vitamin D are:
In addition, when vitamin D levels are around 100 ng/mL, there is a risk of toxicity and hypercalcaemia; in terms of levels considered insufficient or disabled, if studies are conducted for this purpose, however, it is recommended that those with lower than recommended values also provide medical assistance and, depending on the level identified, initiate more treatment.
Low vitamin D values indicate hypovitaminosis, which may be due to low exposure to low intake of vitamin D-rich foods or their precursors, such as fish, fish, arrows, for example. We use foods rich in vitamin D.
In addition, diseases such as fatty liver, cirrhosis, pancreatic insufficiency, inflammatory diseases, rickitism and osteomalacia, and diseases that develop with inflammation of the intestine can cause vitamin D deficiency in the body. Learn about the symptoms of vitamin D deficiency.
Increased vitamin D values indicate hypervitaminosis, which can occur from high vitamin D intake for a long time. Prolonged exposure to the sun does not produce hypervitaminosis because the body is able to regulate vitamin D levels, and when optimal concentrations are identified, vitamin D synthesis is identified by stimulating the sun so that it does not break down, so that it does not break down. toxic to this vitamin due to prolonged exposure to the sun.