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Laboratory diagnostics of vitamin status
Why check your vitamin status?
Vitamins are key micronutrients that regulate hundreds of biochemical processes in our bodies. Even a slight deficiency can disrupt immunity, cognitive function, or energy metabolism.
Laboratory diagnostics of vitamin status is an accurate way to detect vitamin deficiency or excess before clinical symptoms appear.
When should you take a vitamin test?
It is recommended to undergo diagnostics if you notice:
Chronic fatigue, drowsiness, or irritability
Peeling skin, brittle hair or nails
Frequent colds or prolonged recovery from illnesses
Vegetarian food, strict diets
Taking certain medications (e.g., statins, antacids, oral contraceptives)
What tests are included in the laboratory test?
The following indicators are most often studied:
| Vitamin name | What does it show? | Norm* |
|---|---|---|
| Vitamin D (25(OH)D) | Immunity, skeletal system | 30–50 ng/ml |
| Vitamin B12 | Nervous system, hematopoiesis | 200–900 pg/mL |
| Folic acid (B9) | DNA synthesis, pregnancy | >3 ng/ml |
| Vitamin A (retinol) | Vision, skin | 0.3–0.7 mg/l |
| Vitamin E (tocopherol) | Antioxidant protection | 5–20 mg/l |
| Vitamin K | Blood clotting | 0.1–2.2 ng/ml |
| Vitamin C | Immunity, antioxidant | 0.4–2.0 mg/dL |
*Reference values may vary depending on the laboratory.
How to prepare for the analysis?
To ensure accurate results:
Donate blood on an empty stomach (don't eat for 8–12 hours)
Do not take vitamin supplements 3–5 days before the test (with the approval of your doctor)
Avoid physical exertion the day before the test.
Tell your doctor about all the medications you are taking.
Where and how is the research conducted?
The Medilab Plus laboratory is available comprehensive vitamin panel or individual tests. Blood collection takes no more than 5 minutes. Results can be obtained online within 1–2 days.
Can children be tested?
Yes. Diagnosis is especially recommended for:
Refusal to eat, appetite disorders
Frequent acute respiratory infections
Growth or developmental delays
Atopic dermatitis or other skin manifestations
What to do after receiving the results?
Interpretation should be done by doctor — a therapist, endocrinologist or pediatrician. It is important not to prescribe vitamins to yourself without supervision, because hypervitaminosis can be no less dangerous than deficit.
Assessing your vitamin status is a simple step that can help maintain energy, well-being, and prevent chronic diseases. Prevention is always better than cure.
