Vitamin B12

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.

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.

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.

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.

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.

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.

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.