Know Your Blood Parameter: Vitamin A

1. Parameter Name 

   Vitamin A (Retinol)

   
   

2. Test Type 

   Blood

   
   

3. Normal Range 

   20–60 µg/dL

   
   

4. High Levels Indicate 

   Toxicity; may cause liver damage, headaches, blurred vision.

   
   

5. Low Levels Indicate 

   Deficiency; can lead to night blindness, dry eyes, increased infection risk.

   
   

6. Why It's Tested 

   To assess vitamin A status, especially in individuals with vision issues or malnutrition.

   
   

7. Associated Symptoms (if abnormal) 

   Night blindness, dry skin, frequent infections.

   
   

8. What To Do If Abnormal 

   Adjust dietary intake; consider supplements under medical supervision.

   
   

9. Common Conditions Related 

   Xerophthalmia, immune deficiencies.

   
   

10. Nutrition or Lifestyle Connection 

    Include liver, dairy products, and beta-carotene-rich vegetables like carrots and spinach.

    
    

11. References (APA Format)

    • UCSF Health. (2023). Vitamin A blood test.

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