Vitamin B12, active Holo Transcobalamin

The Active Vitamin B12 (Holo Transcobalamin) home blood test measures holo‑transcobalamin — the biologically active fraction of vitamin B12 that is available for cellular uptake. Conducted via professional at‑home blood collection and analysed in UAE‑certified laboratories, this sensitive assay can detect functional B12 deficiency earlier than total B12 measurements and helps guide targeted treatment. Results are reported with laboratory reference ranges and clinical interpretation to support physicians in Dubai and across the UAE.

• Holo Transcobalamin (Active Vitamin B12)
• Concentration (pmol/L)
• Laboratory reference range
• Result interpretation (deficient / borderline / adequate)

• Persistent fatigue, weakness or cognitive changes
• Unexplained peripheral neuropathy or numbness/tingling
• Macrocytic anaemia or abnormal MCV on CBC
• Risk factors for malabsorption (gastric surgery, IBD, celiac disease)
• Strict vegetarian or vegan diets
• Monitoring response after B12 supplementation or bariatric surgery

• Detects biologically active B12 status more accurately than total B12
• Identifies deficiency even when total B12 appears normal
• Guides clinician decisions on supplementation type and dosing
• Convenient at‑home blood collection with UAE‑certified lab analysis
• Fast, reliable results with clinical interpretation for local healthcare providers

• Professional at‑home venous blood collection by a certified phlebotomist
• No fasting required; stay well hydrated before the sample
• Avoid high‑dose oral B12 supplements or injections for 24–48 hours if clinically feasible
• Inform the phlebotomist/clinician of current medications and supplements