VITAMIN D (1,25 DIHYDROXY )

Vitamin D (1,25 Dihydroxy) Test

The Vitamin D (1,25 Dihydroxy) Test is a specialized blood test used to measure the level of calcitriol, the biologically active form of Vitamin D in the body. This test helps assess how well your body is processing vitamin D and regulating calcium metabolism, bone strength, kidney function, and parathyroid gland activity.

Unlike the standard Vitamin D test (25-hydroxy vitamin D), this test evaluates the active hormone form that plays a direct role in maintaining healthy bones and mineral balance. It is often recommended when doctors suspect disorders related to kidney disease, calcium imbalance, bone disorders, parathyroid abnormalities, or certain metabolic conditions.

Vitamin D is essential for calcium absorption and strong bones. Abnormal active Vitamin D levels can contribute to bone weakness, fractures, muscle pain, calcium imbalance, and hormonal disorders.

Benefits of the Test

• Measures active Vitamin D hormone levels
• Assesses calcium metabolism
• Helps evaluate kidney-related Vitamin D activation
• Supports bone health diagnosis
• Detects parathyroid gland disorders
• Monitors treatment effectiveness

Why Doctors Recommend This Test

Doctors recommend this test when patients experience:

• Bone pain
• Muscle weakness
• Frequent fractures
• Calcium imbalance
• Kidney disease
• Suspected parathyroid disorders
• Abnormal standard Vitamin D results
• Metabolic bone disorders

It helps diagnose underlying medical conditions affecting Vitamin D activation and calcium regulation.

Preparation Before the Test

The test usually requires minimal preparation.

Patients should:

• Inform the doctor about Vitamin D supplements
• Mention kidney or parathyroid conditions
• Stay hydrated before testing
• Follow fasting instructions if advised

A blood sample is collected for analysis.

Normal Reporting Time

The normal reporting time for the Vitamin D (1,25 Dihydroxy) test is usually within 24–48 hours, depending on laboratory workflow.

Who Should Take This Test?

This test is recommended for:

• Patients with kidney disease
• Individuals with calcium metabolism disorders
• People with unexplained bone weakness
• Patients with suspected parathyroid abnormalities
• Individuals under Vitamin D treatment monitoring
• Patients with metabolic bone disease

At Focus Diagnostics Hyderabad, advanced laboratory technology and expert pathology specialists provide precise Vitamin D (1,25 Dihydroxy) reports for accurate diagnosis and effective treatment planning.