LabCorp Test

Vitamin A Serum Test

Quick Overview

Determines Vitamin A levels.

Test #017509


Availability: In stock

Also Known As A, Vitamin; Retinol, Serum.
Preparation Fasting for 12 hours required. Refrain from consuming alcohol 24 hours before the collection.
Test Results 3-4 days. May take longer based on weather, holiday or lab delays.

Vitamin A, also known as Retinol, is an essential nutrient for healthy skin, healthy eyes and vision, bone growth, immune function and embryonic development.  Vitamin A is present in liver, dairy products, fish liver oils, dark green and yellow-orange vegetables, and in fruits. Too much vitamin A may cause symptoms that include itchy skin, headache, and hair loss.

The signs and symptoms of vitamin A deficiency include:

  • Night blindness
  • Dry eyes, skin, and hair
  • Ulcers and damage to the cornea, the outermost layer of the front of the eye that covers the iris and pupil
  • Skin thickening and lesions
  • Grayish spots on eye lining (Bitot spots)
  • Repeated infections
  • Anemia

The signs and symptoms that suggest vitamin A toxicity include:

  • Headache
  • Nausea and vomiting
  • Double or blurred vision
  • Fatigue
  • Weakness
  • Dizziness
  • Seizures
  • Irritability
  • Muscle pain
  • Bone and joint pain
  • Weight loss
  • Hair loss
  • Mucous membrane dryness
  • Itching
  • Liver dysfunction
  • Cracks (fissures) at the corners of the mouth
  • Inflammation of the tongue (glossitis)

Testing may be done periodically when a person has a disease that is associated with malabsorption of nutrients to monitor vitamin A status and ensure that the person is getting sufficient vitamin A. Some diseases that are associated with inadequate vitamin A absorption include:

  • Celiac disease
  • Irritable bowel syndrome
  • Crohns disease, a type of inflammatory bowel disease

Trusted, Secure, & Confidential

Please wait...