Iron Deficiency Blood Test

5 Biomarkers | Venous or Capillary Blood Test | CE-marked | UKAS-accredited | Doctor-reviewed results with personalised interpretation.

An iron status profile checking ferritin, iron and iron binding markers. Designed for people investigating tiredness, dizziness, weakness or possible iron imbalance, this test gives clear, clinically reviewed insight so you can understand your results and know what to do next.

Results are typically available within 2 working days from when your sample reaches the laboratory (excluding weekends and bank holidays).

£112.00

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Choose your sample collection method: Book a venous draw at our Livingston clinic Book a venous draw at home with a nurse +£63 Self-arrange a professional sample collection Partner clinic visit + £35.00 Finger Prick

Ferritin
Iron
Total Iron Binding Capacity
Transferrin Saturation
Unsaturated Iron Binding Capacity

Fasting required 8–12 h before the test (water only) recommended for glucose, cholesterol/triglyceride accuracy
Sample timing: between 7:00 AM – 10:00 AM
Stay hydrated; avoid strenuous exercise, heavy meals, and supplements (iron, B12, multivitamins, biotin) for 48 hours prior
Continue prescribed medications unless otherwise directed

Frequently asked questions

It is for adults who suspect low iron, whether from fatigue, breathlessness, hair shedding, restless legs or heavy periods. It measures ferritin, serum iron, transferrin saturation and total iron binding capacity alongside a full blood count.

Yes, and it is common. Iron stores deplete before haemoglobin falls, so you can have significant symptoms while a standard full blood count looks entirely normal. Ferritin is the marker that identifies this earlier stage.

It does, and this is an important limitation. Ferritin rises during infection, inflammation and after injury, which can make it appear normal even when iron stores are low. That is why transferrin saturation and inflammatory markers are interpreted alongside it.

Test in the morning, avoid taking iron supplements for one to two weeks beforehand if possible, and postpone testing if you currently have an infection, as this distorts ferritin.

Because the cause matters. In men and postmenopausal women particularly, iron deficiency can indicate blood loss from the gut that requires investigation. Correcting the level without establishing the reason risks missing something significant, and your report will advise accordingly.