Vitamins & minerals
Blood vitamin level testing
In the Scottish climate, vitamin D deficiency affects most adults, and B12 and iron deficiencies are a common cause of fatigue. Blood vitamin testing shows exactly what you're lacking, instead of guessing with supplements.
Slots every 20 minutes
No referral, no waiting in line.
Our clinic in Glasgow
2 Back Causeway, Glasgow G31 5HE
Service in Polish
+44 7443 652 912
What we test
The most commonly requested vitamin and mineral tests can be done from a single blood draw — you can combine them with a full blood count or thyroid panel.
- Vitamin D (25-OH) — essential year-round in Scotland
- Vitamin B12 and folate — energy and the nervous system
- Ferritin, iron, TIBC — iron stores
- Magnesium, zinc, calcium — muscle function and immunity
When it's worth testing vitamins
In cases of chronic fatigue, hair loss, low mood, muscle cramps, a plant-based diet, after pregnancy, or before starting or changing supplementation.
Supplementation and your result
If you take vitamin D or B12, test before your morning dose, and stop biotin 48 hours before your blood draw. A mandatory £25 phlebotomy fee applies to every appointment (covers the blood draw, sample handling and transport to the laboratory).
Blood tests in your area
We welcome patients from Glasgow and towns within a 50-mile radius — check travel time and local information:
Frequently asked questions
How much does a vitamin D test cost?
Single tests start from £39; you'll find the full price list in our biomarker catalogue.
Does vitamin testing require fasting?
No, vitamins and ferritin can be tested after a light meal — fasting is only needed for lipid panels and glucose.
Can I test several vitamins at once?
Yes, a single blood draw is enough for a full vitamin and mineral panel.
More answers in the FAQ section.