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Choose collection locationVitamins & Minerals · Individual laboratory test
Vitamin B12 (Cyanocobalamin)
Vitamin B12 supports nerves and red cell formation. A blood test may help investigate anaemia, numbness or an absorption problem.
Price for this test on its ownAED 150Test price AED 50
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
- Sample
- Serum
- Laboratory turnaround
- 24 hours
- Collection
- Dubai
- Laboratory
- Intel Lab
Understanding the test
What the Vitamin B12 (Cyanocobalamin) test measures.
Also called Cobalamin (B12)
B12 measurement can help investigate large red cells, anaemia, sensory symptoms or suspected poor absorption. Dietary history and supplements are relevant.
When it may be requested
Investigating deficiency
B12 testing can be useful in the assessment of anaemia, neurological symptoms or absorption difficulties.
Clarifying a borderline value
A clinician may consider other markers and recent supplementation before interpreting the result.
Before your sample
Prepare for collection
SpecimenSerum
Your checklist
B12 alone usually needs no fast. Record when you last used B12 tablets, sprays or injections and bring the dates of treatment if this is a follow-up.
A clinician takes a small sample of blood from a vein. The laboratory uses serum, the liquid separated from the blood after it clots.
Smart Report
Understanding your result
24 hoursLaboratory turnaround
Result guideVitamin B12 (Cyanocobalamin)
Reading your result
A low or borderline concentration is interpreted with symptoms and blood count findings. Some patients need an additional marker to clarify an uncertain result.
What can affect it
- A blood B12 concentration alone may not settle whether symptoms are due to deficiency.
From sample to follow-up
Your testing journey
Laboratory testVitamin B12 (Cyanocobalamin)
- Specimen
- Serum
- Turnaround
- 24 hours
Open your laboratory report
Look for Vitamin B12 (Cyanocobalamin) in your report. Use the sample type and collection time when comparing it with an earlier report.
Explore Smart Report
Discuss the next step
Tell the clinician when nerve or blood symptoms began and when you last used B12, particularly injections.
Health packages
Packages that include this test
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Your laboratory team
Patient questions
Before you book
What if symptoms persist despite a borderline B12 level?
Your clinician can consider the blood count, dietary and medicine history and, where appropriate, a functional marker such as methylmalonic acid.
Can metformin or acid-reducing medicines cause low B12?
Metformin and acid-suppressing medicines can increase the risk of B12 deficiency. Tell your clinician what you take and for how long, particularly if you have tingling, numbness or balance changes. They can decide whether your B12 needs checking while you continue prescribed treatment.
Can I be deficient in B12 even though my result looks acceptable?
A B12 tablet or injection can raise the measured level, even when a deficiency has not been fully treated. Tell your clinician what you took and when. If symptoms persist, they can review earlier measurements and consider additional testing.
Can B12 deficiency affect my nerves if my blood count is normal?
Yes. B12 deficiency can affect nerves before a blood count shows anaemia or enlarged red cells. Mention new or worsening numbness, pins and needles or problems with balance when arranging assessment, even if your blood count was normal.
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Your next step
Vitamin B12 (Cyanocobalamin) test at home.
Sources & further reading
Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.