1,25 DIHYDROXY VITAMIN D Test in UAE

1,25 Dihydroxy Vitamin D test in Dubai and across the UAE to assess the active form of vitamin D in the body. This test is essential for patients with kidney disease, calcium imbalances, or suspected vitamin D toxicity. More accurate than standard vitamin D tests in specific clinical conditions. Results available within 10–12 days.

Overview

The 1,25 Dihydroxy Vitamin D test measures the active form of vitamin D (calcitriol) in the blood — the hormone that regulates calcium and phosphate absorption in the gut and supports bone health. Unlike the more common 25-hydroxy vitamin D test (which reflects overall vitamin D status), this test evaluates how well your body is activating vitamin D — especially important in kidney disease, hypercalcemia, or suspected sarcoidosis. Results are typically available within 10–12 business days.

Why You Need This Test

• Evaluate patients with chronic kidney disease who may not convert vitamin D properly.
• Investigate high calcium levels (hypercalcemia) — may indicate excessive active vitamin D.
• Diagnose or monitor vitamin D toxicity from over-supplementation.
• Assess patients with granulomatous diseases like sarcoidosis or tuberculosis (which overproduce active D).
• Monitor individuals on active vitamin D therapy (e.g., calcitriol or alfacalcidol).
• Differentiate between deficiency and dysregulation of vitamin D metabolism.
• Available with home sample collection across Dubai, Abu Dhabi, Sharjah, and all Emirates.

Symptoms & Risk Factors

Common Symptoms (High Levels)

• High calcium levels: fatigue, nausea, constipation, excessive thirst.
• Kidney stones or reduced kidney function.
• Bone pain or unusual fractures.
• Mental confusion or irritability.
• Polyuria (frequent urination).

Common Symptoms (Low Levels)

• Bone weakness or osteomalacia.
• Muscle pain and cramps.
• Hypocalcemia: tingling, spasms, or seizures.
• Growth issues in children.

Risk Factors

• Chronic kidney disease (reduced activation of vitamin D).
• Sarcoidosis, tuberculosis, or other granulomatous diseases (can overproduce active D).
• Long-term vitamin D or calcium supplementation without monitoring.
• Hyperparathyroidism or parathyroid tumors.
• Malabsorption syndromes: celiac, Crohn’s, post-bariatric surgery.
• Medications: anticonvulsants, corticosteroids, antifungals.

How the Test Works

The body converts vitamin D into its active hormonal form — 1,25-dihydroxyvitamin D (calcitriol) — primarily in the kidneys. This test measures that active hormone directly in the blood.

• Step 1 — Appointment: visit a certified lab or book home blood collection (available in Dubai, Abu Dhabi, Sharjah, and other Emirates).
• Step 2 — Blood draw: a trained technician collects 2 mL of serum from 1 SST tube via venipuncture (takes under 5 minutes).
• Step 3 — Lab analysis: performed using immunoassay for precise measurement.
• Step 4 — Results: delivered securely within 10–12 business days.

This test is critical when standard vitamin D results don’t match clinical symptoms.

Specimen (Sample Type)

• Required sample: 2 mL (minimum 0.5 mL) Serum from 1 SST (Gold-top/Gel separator tube)
• Collection method: standard venipuncture
• Stability: hemolysed specimens are not acceptable
• Transport: ship refrigerated (2–8°C) or frozen (-20°C or lower)

Risks & Safety

• Mild pain or bruising at the needle site (temporary).
• Dizziness (rare, especially in elderly or frail patients).
• Very low infection risk with sterile technique.
• No special risks associated with the test itself.

Result Interpretation

Normal Range

• Adults: 18–78 pg/mL (varies slightly by lab)
• Children: higher levels common due to growth-related bone activity

High Levels (>78 pg/mL)

• May indicate:
  • Sarcoidosis or granulomatous disease (extra-renal activation)
  • Vitamin D toxicity from excessive supplementation
  • Primary hyperparathyroidism
  • Lymphomas (some produce calcitriol)

Low Levels (<18 pg/mL)

• Commonly seen in:
  • Chronic kidney disease (failing kidneys can't activate vitamin D)
  • Severe malnutrition or malabsorption
  • Medications that accelerate breakdown (e.g., phenobarbital)

Consequences if Untreated

• High levels: lead to hypercalcemia, kidney stones, soft tissue calcification, and bone loss.
• Low levels: cause hypocalcemia, muscle weakness, osteomalacia (soft bones), and fractures.
• In children: rickets, growth delay, dental issues.
• In CKD patients: secondary hyperparathyroidism and renal osteodystrophy.

Factors Affecting Test Results

• Medications: calcitriol, alfacalcidol, thiazides, anticonvulsants.
• Vitamin D supplements: may not raise 1,25(OH)₂D unless converted (unlike 25(OH)D).
• Kidney function: GFR directly impacts activation.
• Time of day: levels follow a circadian rhythm (best drawn in morning).
• Pregnancy: increases 1,25(OH)₂D due to placental production.

FAQs

Limitations

• Not used for routine vitamin D screening — only for specific clinical indications.
• Levels do not correlate directly with sun exposure or diet.
• Must be interpreted alongside calcium, phosphate, PTH, and kidney function.
• Not useful for assessing general vitamin D deficiency — use 25(OH)D for that.
• Hemolysed samples will be rejected — proper handling is essential.

Book Your 1,25 Dihydroxy Vitamin D Test Today

Don’t guess — get the right vitamin D insight for kidney, calcium, or bone concerns.

• Home Sample Collection Available (Across Abu Dhabi, Dubai, Sharjah, Ajman, RAK, Umm Al Quwain, Fujairah)
• Fast, Accurate, Confidential Results in 10–12 Days
• Price: AED 450
• ✅ Certified Labs
• 👩‍⚕️ Licensed Technicians
• 🔒 Secure Reporting