| Label Mnemonic: | VTA |
| Epic code: | LAB4249 |
| Downtime form: | Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
6240-8 RCP
356-8593
Patient should fast for 12 hours and abstain from alcohol for 24 hours prior to collection.
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| Red top tube 5 mL (Clot Activator) |
Preferred Minimum: 0.5 mL serum
Absolute Minimum: 0.25 mL serum
Whole blood or body fluids other than serum.
Deliver to laboratory immediately after collection.1-4 days upon receipt at reference laboratory
0-6 years: 11.3-64.7 mcg/dL
7-12 years: 12.8-81.2 mcg/dL
13-17 years: 14.4-97.7 mcg/dL
> or =18 years: 32.5-78.0 mcg/dL
The World Health Organization recommendations supplementation when vitamin A levels fall below 20.0 mcg/dL.
Severe deficiency is indicated at levels less than 10.0 mcg/dL.
Vitamin A values above 120.0 mcg/dL suggest hypervitaminosis A and associated toxicity.
Acute ethanol ingestion may result in increased serum vitamin A levels.
Testing of nonfasting specimens or the use of vitamin supplementation can result in elevated serum vitamin concentrations. Reference values were established using specimens from individuals who were fasting.
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)