Vitamin D (25-OH vitamin D)

Vitamin D (25-OH Vitamin D)

We remind you that independent interpretation of the results is unacceptable, the information provided below is for reference purposes only.

Vitamin D, also known as 25-hydroxyvitamin D or 25(OH)D, is a crucial nutrient that plays a vital role in maintaining overall health and well-being. It is a fat-soluble vitamin that is primarily obtained through exposure to sunlight and dietary sources.

Sources and Functions of Vitamin D

The human body can synthesize vitamin D when the skin is exposed to ultraviolet B (UVB) rays from sunlight. However, factors such as latitude, season, time of day, and the use of sunscreen can affect the amount of vitamin D produced. Dietary sources of vitamin D include fatty fish (such as salmon, tuna, and mackerel), egg yolks, fortified foods (like milk and cereal), and supplements.

Vitamin D is essential for various bodily functions, including:

• Promoting calcium absorption and maintaining strong bones
• Supporting immune system function
• Regulating cell growth and differentiation
• Potentially reducing the risk of certain chronic diseases

Table 1: Vitamin D Sources

Vitamin D plays a crucial role in maintaining optimal calcium and phosphate levels in the bloodstream, which is essential for bone health. It also supports muscle function, nerve transmission, and immune system regulation.

The Role of Vitamin D (25-OH Vitamin D)

Vitamin D, specifically 25-hydroxyvitamin D (25-OH Vitamin D), plays a crucial role in overall health and well-being. It is a fat-soluble vitamin that is essential for various bodily functions, including calcium absorption, bone health, and immune system regulation. The measurement of 25-OH Vitamin D levels in the blood provides valuable information about an individual's vitamin D status.

Indications for Vitamin D (25-OH Vitamin D) Testing

The analysis of 25-OH Vitamin D levels is recommended in the following situations:

• Evaluation of bone health: Vitamin D is essential for proper calcium absorption and maintenance of strong bones. Testing is often recommended for individuals at risk of osteoporosis or bone disorders.
• Monitoring chronic conditions: Certain chronic diseases, such as chronic kidney disease, can impact vitamin D levels. Regular testing may be advised to monitor and manage these conditions.
• Assessment of overall health: Vitamin D testing may be included in routine health check-ups to evaluate overall well-being.
• Specific risk factors: Individuals with limited sun exposure, obesity, malabsorption disorders, or those taking certain medications that can affect vitamin D levels may benefit from testing.
• Pregnancy and lactation: Adequate vitamin D levels are crucial for maternal and fetal health during pregnancy and breastfeeding.

Preparation for the Vitamin D (25-Oh Vitamin D) Test

The procedure for taking a blood sample to determine vitamin D levels is relatively simple and does not require any special preparation. However, there are a few recommendations to consider:

• Fasting: Vitamin D testing can usually be performed without fasting, but in some cases, your healthcare provider may advise you to fast for 8-12 hours before the test.
• Medications: Inform your doctor about any medications or supplements you are taking, as some may affect vitamin D levels.
• Sun exposure: Your recent sun exposure and use of sunscreen can influence your vitamin D levels.

Test Procedure

The blood sample for vitamin D testing is typically drawn from a vein in your arm. This procedure takes only a few minutes and is performed by a trained healthcare professional. After the blood draw, you may experience minor bleeding or bruising at the puncture site, which should resolve within a few days.

Sources:

https://www.medicalnewstoday.com/articles/vitamin-d-25-hydroxy
https://www.mountsinai.org/health-library/tests/25-hydroxy-vitamin-d-test
https://www.verywellhealth.com/vitamin-d-test-4691741
https://www.webmd.com/diet/vitamin-d-deficiency
https://www.healthline.com/health/25-hydroxy-vitamin-d-test
https://medlineplus.gov/ency/article/003569.htm
https://endocrinology.testcatalog.org/show/25HDN

IMPORTANT!

It is crucial to remember that the information in this section is not intended for self-diagnosis or self-treatment. If you experience any symptoms or exacerbation of a condition, it is essential to consult a healthcare professional for proper diagnostic testing and treatment. Only a qualified specialist can make an accurate diagnosis and determine the appropriate treatment. To ensure the most accurate and consistent evaluation of test results, it is recommended to have them performed at the same laboratory. Different laboratories may use varying methods and units of measurement for similar tests.