Vitamin D 25-OH LIS Code: D (25-OH)

What is Vitamin D (25-OH) Testing?

Vitamin D (25-OH), or 25-hydroxyvitamin D, is a blood test used to determine the level of vitamin D in the body. This fat-soluble vitamin plays a critical role in supporting bone strength, immune system performance, and the regulation of calcium and phosphorus levels in the bloodstream.

Sources of Vitamin D

Vitamin D can be produced in the skin through exposure to sunlight and is also available from dietary sources such as oily fish, fortified dairy products, and nutritional supplements. Maintaining optimal vitamin D levels is essential for long-term health and disease prevention.

Symptoms and Risks of Vitamin D Deficiency

A deficiency in vitamin D can lead to a range of health problems, including bone pain, muscle weakness, fatigue, and an increased likelihood of fractures. In children, severe deficiency may cause rickets—a condition that results in bone malformation. In adults, prolonged low levels of vitamin D are associated with osteomalacia, decreased bone density, and increased risk of falls, especially in the elderly.

Impact on Calcium Absorption and Bone Health

Vitamin D is necessary for effective calcium absorption from the diet. Inadequate levels reduce the body's ability to utilise calcium efficiently, which can compromise bone integrity over time. Low vitamin D also contributes to secondary hyperparathyroidism, where parathyroid hormone (PTH) levels rise to compensate, further weakening bone structure.

Bone Health Screening in Slough and Surrounding Areas

Residents in Slough and nearby areas including Windsor, Maidenhead, Langley, and Burnham can access private vitamin D (25-OH) testing to assess bone health and overall wellbeing. This test, combined with other clinical markers, provides valuable insight into bone metabolism and helps in the prevention and management of osteoporosis and related conditions.