Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption and are rarely due to inadequate diet.
Vitamin A is needed for growth and for strong bones and teeth. As you grow older, it helps keep your skin and eyes healthy. Vitamin A is present in liver, fish liver oils, dairy products, dark green and yellow-orange vegetables, and in fruits. Too much vitamin A may cause symptoms that include headache, itchy skin, and hair loss.
A significant deviation from the normal range may require further evaluation by your physician.
Vitamin A
Overnight fasting is required. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.
Estimated turnaround for results is 5 business days.
Vitamin A is needed for growth and for strong bones and teeth. As you grow older, it helps keep your skin and eyes healthy. Vitamin A is present in liver, fish liver oils, dairy products, dark green and yellow-orange vegetables, and in fruits. Too much vitamin A may cause symptoms that include headache, itchy skin, and hair loss.
A significant deviation from the normal range may require further evaluation by your physician.
Vitamin A, serum.
Patient should fast for 12 hours and abstain from alcohol for 24 hours prior to collection. Blood should be collected before breakfast in the morning and prior to any medication.
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