Know Your Blood Parameter: Vitamin B12

1. Parameter Name 

   Vitamin B12 (Cobalamin)

   
   

2. Test Type 

   Blood

   
   

3. Normal Range 

   160–950 pg/mL

   
   

4. High Levels Indicate 

   Rare; may be due to supplementation or liver disease.

   
   

5. Low Levels Indicate 

   Deficiency; can lead to anemia, neurological issues, fatigue.

   
   

6. Why It's Tested 

   To diagnose deficiency, especially in individuals with anemia or neurological symptoms.

   
   

7. Associated Symptoms (if abnormal) 

   Fatigue, weakness, numbness, memory issues.

   
   

8. What To Do If Abnormal

   Increase intake through diet or supplements; address underlying absorption issues.

   
   

9. Common Conditions Related 

   Pernicious anemia, malabsorption syndromes.

   
   

10. Nutrition or Lifestyle Connection 

    Consume animal products like meat, eggs, dairy; consider supplements if vegetarian or vegan.

    
    

11. References (APA Format) 

    • Medical News Today. (2023). Vitamin B12 level test. 

    • Cleveland Clinic. (2023). Vitamin B12 deficiency.