Vitamin A (Retinol), EDTA Whole Blood
- Reporting Time:
- 4 Days
- Specimen Type:
- Home Collection:
- It is recommended that the person fasting for at least 10-12 hours before the test. Person is advised not to eat or drink anything except water prior to the test
Parameters Covered in the above test : 1
Vitamin A (Retinol), Serum
To detect deficiency or toxicity of vitamin A in a person.
When there are symptoms suggestive of vitamin A deficiency or excess, or person is at risk for vitamin A deficiency.
Vitamin A test is used to diagnose vitamin A deficiency or toxicity. Vitamin A deficiency presents with symptoms like night blindness and is seen with impaired intestinal absorption associated diseases. Vitamin A is a fat soluble vitamin, essential for normal vision, skin growth and integrity, bone formation, immune function. Vitamin A includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (mostly beta-carotene). The body ca ot synthesise vitamin A and must be supplied through diet. The sources of vitamin A are meat (retinol), vegetable and fruits (carotene). Deficiencies in vitamin A causes impaired night vision, eye damage, and blindness in severe cases. Vitamin A deficiency can be a primary or a secondary deficiency. A primary deficiency is seen in children and adults who do not consume provitamin A carotenoids present in fruits and vegetables adequately or preformed vitamin A present in animal and dairy products. Early weaning also increases the risk of vitamin A deficiency. Secondary vitamin A deficiency is associated with malabsorption of lipids, impaired production and release of bile, and exposure to oxidants (cigarette smoke, and chronic alcoholism). Vitamin A toxicity causes vision changes, bone pains and skin changes. Chronic toxicity can cause liver damage and increased pressure on the brain.
1. What are the sources of vitamin A?
The body ca ot synthesise vitamin A and must be supplied through diet. The sources of vitamin A are meat (retinol), vegetable and fruits (carotene).
2. How is vitamin A deficiency treated?
Mild to moderate deficiency of vitamin A is treated with supplements and/or with dietary alterations. Severe deficiency requires monitored therapeutic doses of vitamin A.
3. What are the symptoms of vitamin A deficiency?
Vitamin A deficiency causes impaired night vision, eye damage, and blindness in severe cases.
4. What are the symptoms of vitamin A toxicity?
Vitamin A toxicity causes vision changes, bone pains and skin changes. Chronic toxicity can cause liver damage and increased pressure on the brain.