1,25-dihydroxyvitamin D (calcitriol)
This test measures 1,25-dihydroxyvitamin D, the biologically active form of vitamin D. It is used to investigate calcium imbalance, kidney disease and...
Vitamin Profile 1 is a targeted blood test assessing key antioxidant and energy-related vitamins. It helps detect nutritional deficiencies that may impact immunity, skin, nerves, and overall wellbeing.
Turnaround time
2 days
Biomarkers count
7
Professional phlebotomist comes to you
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Visit our clinic for your test
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Home visits require at least 24 hours notice.
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SelectedWhat is the Vitamin Profile 1 test?
Vitamin Profile 1 is a nutritional blood test that measures a focused group of essential vitamins involved in antioxidant protection, energy metabolism, nerve function, and immune health. It combines both fat-soluble and water-soluble vitamins to give a balanced overview of nutritional status.
This profile is particularly useful when symptoms suggest general vitamin deficiency rather than a single nutrient problem. Several of the vitamins included work synergistically, meaning a combined assessment is often more clinically informative than individual testing.
The test is commonly used for fatigue, frequent infections, skin or vision issues, neurological symptoms, and general health optimisation.
Why do I need a Vitamin Profile 1 test?
Vitamin deficiencies can develop due to poor dietary intake, absorption problems, increased oxidative stress, or chronic illness. Symptoms are often subtle and overlap across different deficiencies, making targeted testing important.
Vitamin Profile 1 is ideal for individuals who want a broad yet cost-effective assessment of key vitamins without undergoing extensive micronutrient testing. It is also useful for monitoring nutritional status over time.
You may benefit from this test if you experience:
Benefits of the Vitamin Profile 1 test
Step-by-step – How we offer this test
Option 1: Clinic-based blood test (UK-wide)
Option 2: Home or hotel visit (+£60, UK-wide)
Your results explained
Low vitamin levels
Low levels in one or more markers indicate nutritional deficiency, poor absorption, or increased physiological demand.
Typical UK interpretation (low):
Low levels may contribute to fatigue, immune weakness, neurological symptoms, or skin and vision problems.
Normal vitamin levels
Normal results suggest adequate vitamin availability to support immune, neurological, and metabolic functions.
Typical UK interpretation (normal):
Vitamin-related deficiency is unlikely within this range.
High vitamin levels
High levels are most often due to supplementation. Fat-soluble vitamins require careful interpretation due to storage in the body.
Typical UK interpretation (high):
Persistently elevated levels may require dose adjustment or review.
Simple steps to get your results
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsFollow these guidelines for accurate results
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
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