Normal Values:

Normal values range from 50 to 200 micrograms per deciliter.

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

What abnormal results mean:

Lower than normal values indicate a vitamin A deficiency, which may be associated with:

• Developmental aberrations of bones or teeth in young children
• Dry or inflamed eyes
• Hair loss
• Inadequate absorption of fats from the intestinal tract
• Loss of appetite
• Malabsorption syndrome (for example, celiac disease, sprue)
• Night blindness
• Recurring infections
• Skin rashes