What Is It?

25HDN, or 25-Hydroxyvitamin D2 and D3, S is a diagnostic test to screen for vitamin D deficiency. It is also useful as a diagnostic tool to determine the causes of rickets and osteomalacia (softening of the bones), to monitor Vitamin D levels during replacement therapy, and to diagnose hypervitaminosis D, also called vitamin D toxicity. 25HDN is a simple blood test.

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Who Is It For?

Vitamin D testing is recommended for:

  • Anyone concerned about their well-being, health, and vitamin D levels
  • Those who suffer from Seasonal Affective Disorder
  • Anyone who receives treatment or therapy for osteoporosis and other bone disorders
  • Elderly people, particularly those with insufficient exposure to sunlight 
  • People with a diagnosis or signs of hypocalcemia or hypercalcemia (too much or too little calcium)
  • Anyone suffering from rickets and osteomalacia 
  • Patients receiving vitamin D therapy who don’t show signs of improvement
  • Children who frequently get sick

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Why Is It Important?

Vitamin D is a nutrient our bodies need to stay healthy. It keeps our bones strong, aids in calcium absorption, and regulates the function of the parathyroid gland.
Insufficient vitamin D levels can cause:

  • Loss of bone density
  • Increased susceptibility to viral infections
  • Rickets, osteomalacia, osteoporosis and other bone diseases

There is also evidence that may indicate that vitamin D deficiency can contribute to diabetes, high blood pressure, cancer, and autoimmune conditions such as multiple sclerosis.

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What is the cost?

If purchased on its own during your appointment, this test costs $100.00 + Tax. When multiple tests are purchased by the same person during the same appointment, Ichor realizes some operational efficiencies and can provide discounts. For multiple tests, our policy is that the most expensive test will be charged in full, with any subsequent tests receiving a 25% discount. 

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