£59.00
An at-home iron blood test — iron, ferritin, transferrin, total iron-binding capacity and CRP. Ideal for endurance athletes and anyone unexplainably tired. UKAS UK lab. From £75.
Iron is a marker endurance athletes often overlook. Low ferritin — your iron stores — is associated with reduced energy, slower recovery and poorer training quality, and can be low before standard anaemia thresholds are met, which is why an iron blood test is a useful check for active people.
We give you access to your data — not medical advice. This test returns laboratory results and general information only. It is not a diagnosis, a treatment or a clinical opinion. No clinician reviews or comments on your results before they reach you — you receive your numbers against standard reference ranges, and interpreting them is for you and your GP. If a result falls outside the reference range, or you feel unwell, contact your GP; in an emergency call 111 or 999. You must be 18 or over to order.
This panel measures 5 biomarkers across 2 areas, analysed in a UKAS-accredited UK laboratory. Every marker is listed in full below.
Endurance and high-volume athletes, plant-based eaters, regular blood donors, and anyone flat or fatigued without an obvious reason. Fatigue can also be thyroid or vitamin-related — the Thyroid and Vitamins tests complement this one.
Finger-prick samples are occasionally rejected by the laboratory because there is too little blood or the sample is too old to test, which means starting again. Four things make that far less likely: collect in the morning, warm your hands first (run them under warm water and let them hang down for a minute), drink plenty of water beforehand, and post the sample back the same day you take it — never on a Friday or Saturday, so it does not sit in the postal system over a weekend.
Who should not use a home kit: if you take anticoagulants, have a bleeding or clotting disorder, or feel faint at the sight of blood, speak to your GP before testing and consider a clinic-collected panel instead. If bleeding does not stop after firm pressure, seek medical advice.
Including CRP matters: inflammation can artificially raise ferritin and mask low stores, so measuring both gives a truer read. This test is for information and monitoring, not diagnosis — low or high iron results should be reviewed by a doctor before you supplement heavily, as too much iron is also a problem. Your results are private. They are handled as confidential health data and delivered to you securely. They are shared only with our laboratory partner in order to process your test, and otherwise never without your consent.
Ferritin reflects your body’s iron stores. It can fall well before standard anaemia shows up, so it’s often the earliest sign that training or diet is depleting your iron.
A morning sample before eating is preferred, as iron levels vary through the day and after meals. Avoid iron supplements in the hours before testing.
CRP flags inflammation, which can raise ferritin independently of your true iron stores. Measuring it alongside ferritin prevents a misleadingly high reading.
Typicallysent as soon as the laboratory reports them of the lab receiving your sample.
Use the results to have an informed conversation with your GP. Iron overload carries its own risks, so supplementation should be guided rather than guessed.
Related: Vitamins Test · Performance Test · Nutrition Guide · All blood tests
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