Markers tested include:
- Vitamin A
- Vitamin E (alpha tocopherol)
- Vitamin E (gamma tocopherol)
Preparation for test: Patient should abstain from alcohol for 24 hours prior to collection. Blood should be collected before breakfast in the morning and prior to any medication.
Expected turnaround is within 4-6 days, although this may vary depending on other tests ordered for the same blood draw, and expected variation with testing.