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Vitamin A

Item Value
Approval req'd? No
Available Stat? No
Test code VITA
Performed by Quest
Sendout? Yes
Method HPLC
Patient Preparation An 8 hour fast before specimen collection is preferred.
Collection Instructions Wrap the tube in aluminum foil to protect it from light.
Container type Gold top or Red top
Amount to Collect 4 mL blood
Sample type Serum
Preferred volume 2 mL serum
Min. Volume 0.7 mL serum
UCSF Rejection Criteria Not protected from light
Processing notes Freeze serum at -20C in dark pour-off vial. Order Quest test # 921.
Ref Lab Rejection Criteria Received room temperature, received refrigerated but not protected from light.
Units µg/dL (mcg/dL)
Normal range Age:
1-6 years 20-43 µg/dL
7-12 years 26-49 µg/dL
13-19 years 26-72 µg/dL
> 19 years 38-98 µg/dL
Synonyms Retinol
Stability Room temperature 1 day, refrigerated 1 week, frozen at -20C, 1 year.
Turn around times Test run Monday-Friday. Turnaround time: 2-4 days.
Additional information To convert µg/dL to µmol/L (SI units) multiply by 0.0349.
CPT coding 84590-90
LOINC code 2923-1
Last Updated 6/2/2016 5:10:14 PM
Entry Number 998
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