Vitamin E (Alfa-tocopherol)
fS-E- Vit KL 3169
Vitamin E (alfa-tocopherol) is a lipid-soluble vitamin that is one of the most important antioxidants in the body. It protects the cell membrane compounds, especially polyunsaturated fatty acids, from oxygenation caused by radicals. It also prevents the oxygenation LDL particles, and can protect tissues from heavy metal toxicity. Decreased vitamin E levels may indicate lipid absorption deficiency. Vitamin E levels are clearly elevated in familial hypercholesterolemia. Children and youth (younger than 19 yrs) have lower vitamin E levels than adults.
Investigating vitamin E deficiency or excessive intake.
Blood sample. Requires 12 hours of fasting. Glass of water and usual medication are allowed.
No vitamin E supplements during 12 hours.
1 mL (minimum 0.5 mL) of serum or lithium heparin plasma (12 hours fasting). Protect from direct sunlight.
Storage and delivery
Delivery at room temperature on the sampling day. Store refrigerated over the weekend, ship at room temperature.
Liquid chromatography (HPLC).
Turnaround time (weekdays)
5 – 10
adults 8 – 48 µmol/L
The same sample may be used to test for vitamin A, KL 1113.