Vitamin A (Retinol):
Coupon Codes not valid for this testing.
Fasting Required: Yes 10-12 hours
Lab: Quest Diagnostics
Specimen: Blood
Results: Send out test - set up Mon - Sat, then 2-4 days average processing time
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Special Instructions: No foods containing vitamin A should be ingested in the previous 48 hours by patients older than six months. For those younger than six months, the period is 24 hours.
Limitations: Results may be elevated in women on oral contraceptives.
Description: 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.
Alternative Name(s): Retinol
Fasting Required: Yes 10-12 hours
Lab: Quest Diagnostics
Specimen: Blood
Results: Send out test - set up Mon - Sat, then 2-4 days average processing time
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Special Instructions: No foods containing vitamin A should be ingested in the previous 48 hours by patients older than six months. For those younger than six months, the period is 24 hours.
Limitations: Results may be elevated in women on oral contraceptives.
Description: 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.
Alternative Name(s): Retinol