Reviewed: 16. April 2026
Vit. B12 Vitamin B12 (Cobalamin)
Unit: pg/ml
Quick Explanation
Vitamin B12 (cobalamin) is essential for blood formation, the nervous system, and cell metabolism. Deficiency develops slowly and can cause fatigue, tingling, and memory issues. Vegans and older adults are at higher risk. Discuss any suspicion with your doctor.
📊 Reference Values
ℹ️ Reference ranges may vary slightly between laboratories. Always compare your value with the reference range from your own lab report.
🔍 Possible Causes
Value too high — possible causes
- ·Liver disease
- ·Certain blood disorders
- ·Overdose of supplements
Value too low — possible causes
- ·Vegan/vegetarian diet
- ·Atrophic gastritis
- ·Poor intestinal absorption
- ·Long-term use of metformin or proton pump inhibitors
This list shows possible causes — not a diagnosis. Only your doctor can correctly interpret your result.
🩺 Questions for Your Doctor
- →Is my B12 level sufficient, or is there a functional deficiency?
- →Do I need injections or tablets?
- →Is the cause an absorption problem in the stomach?
Have a complete lab report?
Medyra explains your entire lab report in plain language and prepares questions for your doctor appointment — free, in your language, in under 60 seconds.
Start for free →🔗 Related Lab Values
Medical Disclaimer
The content on this page is for general information only and does not replace professional medical advice, diagnosis, or treatment. Always consult your doctor or pharmacist for health-related questions. Lab values should always be assessed in the context of your personal medical history.