This entry is part of the Nutri Tailor Health Reference Library — cited research on supplements, nutrients and adjacent areas of health.
Ferritin 200 µg/L is high-normal for men and above typical for pre-menopausal women, and it is not, on its own, evidence of iron overload. Studies of raised ferritin in primary care show that inflammation, liver strain, regular alcohol and metabolic factors explain it far more often than genuine iron excess, which is why context and trend matter more than a single reading. Nothing about 200 is urgent. A sensible response is to mention it at a routine GP contact, where a repeat test alongside CRP and liver function reads it properly. Iron supplements have no place at this level.
Enter what you have. Your ferritin alone works; the other fields sharpen the reading. Nothing you enter leaves this device. Nothing is saved. No AI is used, only published UK guideline thresholds.
This tool gives educational interpretation of published evidence. It is not personal dosing advice and it does not diagnose. It knows nothing about your history, symptoms or other results. Interpreting your results over time, alongside everything else about you, is what Nutri365 does.
Ferritin rises for two different reasons. The first is more stored iron. The second is more ferritin released per unit of iron, which is what inflammation, liver cell stress and alcohol produce. Studies show the second route is the more common one in practice, which is why a raised ferritin often returns to normal when weight, drinking or an inflammatory flare changes, without any change in iron itself. Genuine overload, most often genetic haemochromatosis in the UK, raises ferritin alongside a raised transferrin saturation, a second iron measure, and that combination is what separates the two explanations.
A repeat in around 3 months, ideally when well and after any lifestyle change, is the informative next reading. A level that is stable and explained by context needs only annual routine monitoring. A level that rises across repeats needs the fuller iron studies. There is no urgency at this band, only a direction to establish.
Nothing at 200 is an emergency. Two follow-through rules apply. A persistent rise across repeats deserves the transferrin saturation test rather than repetition alone, and accompanying symptoms, meaning joint pain, marked fatigue or discomfort under the right ribs, upgrade the conversation from a mention to an appointment. Iron supplementation is the one clearly wrong move at this level.
For a pre-menopausal woman, 200 is unusual enough to deserve a mention at a routine appointment, because expected levels in this group run lower. For men, particularly those carrying weight, drinking regularly or training hard, 200 is common and most often reflects lifestyle rather than iron. Anyone of Northern European descent with a family history of haemochromatosis should say so, because that changes the test a GP orders next. People with known liver conditions or inflammatory disease will find this band tracks the underlying condition more than the diet.
No deficiency threshold is close to this band. On the raised side, WHO guidance from 2020 places its evaluation flag above 500 µg/L in adults who are not healthy, and UK laboratory reference ranges for men commonly run to 300 or 400. The usual clinical pattern for a result like 200 in a well person is unhurried. The result is repeated alongside CRP and liver function, transferrin saturation is added if it stays up, and the pattern rather than the single number decides whether anything further is needed.
No dramatic action is needed, and no iron should be added from any source, including multivitamins. It is worth mentioning the result at the next routine GP contact and asking about a repeat with CRP, liver function and transferrin saturation, which between them read the number properly. The lifestyle factors that lower ferritin when it reflects strain, meaning less alcohol, better metabolic health and weight loss where relevant, are worth attention regardless, because they are the common drivers at this band. The trend over a year says more than any single reading. Nutri365 stores results such as this, reads them over time alongside tracking data and reported symptoms, checks for interactions and contraindications, and refers questions outside scope to a health specialist.
| Threshold | Meaning | Source |
|---|---|---|
| Below 15 | Iron deficiency in apparently healthy adults | WHO 2020 |
| Below 30 | Iron deficiency confirmed in UK practice (92% sensitivity, 98% specificity) | NICE CKS / NHS |
| Below 40 | Deficiency highly likely (98% sensitivity and specificity) | NHS guidance |
| Above 50 | Deficiency excluded, unless inflammation is present | NHS guidance |
| Below 70 with inflammation | Deficiency still possible when CRP is raised | WHO 2020 |
| Above 500 | Possible overload or other disease, needs clinical evaluation | WHO 2020 |