fS-A-vit KL 1113

Vitamin A is a lipid-soluble vitamin that plays a role in visual sensation, cellular growth and differentiation, and reproductive functions. Vitamin A enhances normal iron metabolism and maintains the normal function of mucous membranes, skin, vision and immune system. Decreased vitamin A levels indicate insufficient vitamin A intake or lipid absorption deficiency, while elevated levels indicate excessive use of vitamin supplements. Children and youth (younger than 19 yrs) have lower vitamin A levels than adults.

Indications​

Demonstrating vitamin A deficiency or excessive intake.

Preparation​

Blood sample. Requires 12 hours of fasting. Glass of water and usual medication is allowed.
No vitamin A supplements during 12 hours. 

Sample

1 mL of serum (minimum 0.5 mL) 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.

Method​

Liquid chromatography (HPLC).

Reference ranges​

women 1.1 – 3.1 µmol/L
​men 1.4 – 3.7 µmol/L

Testing frequency​

Once per week

Turnaround time​

(weekdays) 5 – 10

Notes​

The same sample may be used to test for vitamin E, KL 3169.

Inquiries

martin.tornudd@mineraalilaboratoriomila.fi