Vitamin B12
Dr. Lal PathLabs
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Category
Blood
Sample
Blood
Report Time
24 hrs
Fasting
Not needed
About Vitamin B12
Measures Vitamin B12 in blood. Low levels cause anaemia, nerve damage and fatigue.
When Should You Get This Test?
Your doctor may recommend the Vitamin B12 if you experience any of the following:
Conditions This Test Can Detect
Early detection through the Vitamin B12 can help diagnose:
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How to Prepare
No fasting required
You can eat and drink normally before this test.
Stay well hydrated
Drink plenty of water before your blood draw. Hydration makes veins easier to locate and reduces discomfort.
Inform about medications
Tell the lab technician about any medications, supplements, or herbal remedies you're taking as these may affect results.
Avoid strenuous exercise
Refrain from heavy physical exercise 24 hours before the test as it can temporarily alter certain blood parameters.
Wear comfortable clothing
Wear loose-fitting clothes with easy access to your arm for the blood draw.
Normal Reference Ranges
Reference ranges may vary slightly between labs. Consult your doctor for interpretation.
| Parameter | Normal Range | Unit |
|---|---|---|
| Haemoglobin (Men) | 13.5 – 17.5 | g/dL |
| Haemoglobin (Women) | 12.0 – 15.5 | g/dL |
| RBC Count | 4.5 – 5.5 | million/μL |
| WBC Count | 4,500 – 11,000 | /μL |
| Platelet Count | 150,000 – 400,000 | /μL |
| Haematocrit | 41 – 53% | % |
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Frequently Asked Questions
What is the Vitamin B12 test?
The Vitamin B12 is a diagnostic blood test that helps evaluate specific health parameters. It provides valuable information to your doctor for diagnosing conditions, monitoring diseases, or assessing the effectiveness of treatment.
Do I need to fast before this test?
Fasting requirements vary by test. For most blood glucose and lipid tests, 8–12 hours of fasting is required. For hormone and routine tests, fasting may not be necessary. Please check the specific fasting requirement shown on this page and confirm with your doctor.
How long does it take to get my report?
Most routine test reports are available within 24–48 hours. Urgent reports can be processed in 4–6 hours at an additional charge. Specialized tests may take 3–5 business days. You'll receive a notification once your report is ready.
Can I book a home sample collection?
Yes! Many partnered labs on Lab Dekho offer free or paid home sample collection. A trained, certified phlebotomist will visit your home at your preferred time slot and collect the sample safely.
How do I prepare for this test?
General preparation includes: staying hydrated (drink water), avoiding strenuous exercise 24 hours before, informing the lab about any medications you take, and following fasting instructions if required. Always follow your doctor's specific guidance.
Is the test result the same across labs?
While test methodology is standardized, minor variations in reference ranges may exist between labs. Always get follow-up tests at the same lab for consistency. NABL-accredited labs follow national quality standards ensuring accurate results.
What happens after I get my report?
Share your report with your doctor who will interpret the results in context of your symptoms and medical history. Abnormal values don't always mean a disease — many factors can affect test results. Never self-diagnose based on lab reports alone.
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Questions & Answers
Medical Disclaimer: This page is for informational purposes only and does not constitute medical advice. Lab test results should always be interpreted by a qualified healthcare professional in the context of your clinical history. Do not self-diagnose or alter your treatment based on test results alone.
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