Vitamin A

The Vitamin A test measures the level of vitamin A in the blood. Vitamin A is a fat-soluble vitamin essential for vision, immune function, skin health, and cell growth. This test helps assess vitamin A levels to diagnose deficiencies or excesses and to monitor the effectiveness of supplementation or treatment.

Sample type:

Serum

Preparation:

You do not need to do anything special to prepare for the sample collection. Fasting is not required for this test.

Test type:

In person or via trained mobile phlebotomist

Biomarkers

Vitamin A (Retinol)

Symptoms or conditions analyzed by this test

The Vitamin A test measures the concentration of this essential nutrient in the blood. Deficiency in vitamin A can result in vision problems, particularly night blindness, dry skin, and impaired immune function. Excessive levels may cause toxicity with symptoms such as nausea, headaches, and liver damage. This test is important for diagnosing vitamin A deficiencies and monitoring potential toxicity.

Question 1