Vitamin D (1,25 - DIHYDOXYCHOLECALCIFEROL)

The Vitamin D (1,25‑dihydroxycholecalciferol) test measures the active form of vitamin D—calcitriol—circulating in the blood. Calcitriol is produced primarily by the kidneys and plays a central role in calcium and phosphate homeostasis, bone mineralization and modulation of immune function; measuring it gives clinicians insight into the bioactive vitamin D status rather than the storage form (25‑OH vitamin D).

This test is used to evaluate disorders of vitamin D metabolism, assist in the diagnosis and management of chronic kidney disease, parathyroid disorders, unexplained hypercalcemia or hypocalcemia, and to monitor calcitriol therapy. Touch Connect offers convenient at‑home venous collection across Dubai with rapid transport to accredited laboratories, allowing clinicians to interpret results alongside clinical findings and other relevant tests.

• 1,25‑Dihydroxycholecalciferol (Calcitriol)
• 1,25(OH)2D concentration
• Reporting units (pg/mL)
• Analytical method (LC‑MS/MS or Immunoassay)

• Suspected altered vitamin D metabolism (e.g., chronic kidney disease)
• Unexplained hypercalcemia or hypocalcemia
• Abnormal parathyroid hormone (PTH) results
• Monitoring calcitriol therapy or targeted supplementation
• Symptoms such as bone pain, muscle weakness or recurrent infections

• Accurate assessment of the active (bioavailable) vitamin D form
• Supports diagnosis and management of bone, renal and endocrine disorders
• At‑home sample collection across Dubai for patient convenience
• Rapid processing at accredited laboratories for reliable results
• Actionable data to guide supplementation and clinical treatment

• At‑home venous blood collection by a certified phlebotomist
• No fasting required; remain hydrated before sample collection
• Inform the collector about all medications and vitamin D supplements
• Available across Dubai with secure courier transfer to the testing lab