Vitamin D 1,25 Dihydroxy (Calcitriol) Blood Test

What is the purpose of this test?

The Vitamin D 1,25 Dihydroxy (Calcitriol) Blood Test measures the level of calcitriol, the active form of vitamin D in the body. Vitamin D is essential for maintaining healthy bones, immune function, and overall well-being. This test is particularly important because it assesses how well the body is converting vitamin D into its active form, which is crucial for calcium absorption and bone health.

Low or high levels of calcitriol can indicate various health conditions. For instance, low calcitriol levels may suggest problems with the kidneys, parathyroid glands, or insufficient vitamin D intake, while high levels may be associated with certain disorders, including granulomatous diseases or certain cancers. By evaluating calcitriol levels, healthcare providers can better understand your vitamin D status and its impact on your health.

Who should get this test?

• Individuals with symptoms of vitamin D deficiency, such as bone pain or muscle weakness
• People with kidney disorders that may affect vitamin D metabolism
• Those with conditions that impair calcium absorption, like celiac disease or Crohn's disease
• Patients with parathyroid disorders or unexplained calcium imbalances
• Individuals undergoing treatment for certain cancers or granulomatous diseases

When should I order the Vitamin D 1,25 Dihydroxy (Calcitriol) Blood Test?

You should consider ordering the Vitamin D 1,25 Dihydroxy (Calcitriol) Blood Test if you experience symptoms or have conditions that suggest an issue with vitamin D metabolism. Symptoms to consider:

• Bone pain or tenderness
• Muscle weakness or cramping
• Fatigue or excessive tiredness
• Unexplained fractures or bone loss
• Changes in mood or cognitive function

If you have these symptoms or are at risk for vitamin D-related health issues, this test can provide important information to help guide your treatment and improve your overall health.