Vitamin A, E, and β-Carotene Profile
Use
Assess hyper-vitaminosis or vitamin deficiency. See individual test descriptions for more information.
Special Instructions
Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, blood should be collected before feeding. It is also recommended to collect blood before breakfast in the morning and prior to any medication administration. Beta Carotene should be handled with care to ensure it is protected from light.
Limitations
These tests were developed and their performance characteristics determined by LabCorp. However, they have not been cleared or approved by the US Food and Drug Administration (FDA), which may impact the regulatory standing of these results. Variations in specimen handling, patient preparation, and atmospheric exposure to light for beta carotene could potentially affect the accuracy of the results.
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 2053-7
- 2923-1
- 1823-4
- 63370-1
Result Turnaround Time
4-7 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Two aliquots: 0.8 mL each
Minimum Volume
Two aliquots: 0.4 mL each
Container
Vitamin A and Vitamin E samples can be shipped in red-top tube or gel-barrier tubes; Beta Carotene should be shipped in amber plastic transport tube with amber top.
Collection Instructions
If red-top tube is used, transfer separated serum to a plastic transport tube. Beta carotene should be shipped in amber plastic transport tube with amber top.
Patient Preparation
Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
Storage Instructions
Room temperature. Beta Carotene should be light-protected.
Causes for Rejection
Beta Carotene specimen not protected from light; sample type other than serum received
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 14 days |