A High Ferritin with a High Transferrin Saturation
Both numbers raised together is the combination that makes iron overload the likely explanation instead of an incidental one. A ferritin alone has a long list of explanations that have nothing to do with iron; add a raised saturation and most of that list falls away. This is the point at which genetic testing and an assessment of the liver become the right next steps.
The pattern on your report
- Ferritin High · marked Key
- Transferrin saturation High · marked Key
- ALT High Key
- CRP Normal Key
Printed as: ALT in U/LCRP in mg/Lor mg/dL— A normal value is what allows the ferritin to be read as iron rather than as inflammation.Ferritin in ug/Lor ng/mL— The same figure under two names. Here it gauges how much has accumulated, which is what predicts organ damage.Transferrin saturation in %— A percentage everywhere, and best judged on a fasting sample.
Why the numbers look like this
Ferritin is ambiguous by itself because it does two jobs: storing iron and responding to inflammation. Saturation does only one, reporting how loaded the transport protein is. When both rise together, the shared explanation is that there is genuinely more iron in the system.
In hereditary hemochromatosis the fault is in hepcidin signaling, so absorption never switches off. Iron accumulates in the liver first, then the pancreas, heart, joints and pituitary, and the damage tracks total lifetime loading, not the number on today's report.
That time-dependence is why the ferritin matters here in a way it did not on the earlier page. Saturation says accumulation is happening; ferritin says how much has already accumulated, and that is what predicts whether organs have been affected.
Not being flagged is not the same as normal
The ferritin level is used to gauge the likelihood of liver fibrosis, with the risk rising as the figure climbs, and it is one input into whether a liver biopsy or MRI is needed. Because ferritin also rises with inflammation, alcohol and metabolic liver disease, the number overstates iron loading in anyone with those, which is why MRI measurement of liver iron has largely replaced biopsy for quantifying it. Saturation is more specific but less quantitative.
What else on the report can hide this
The liver is the organ that determines prognosis, so the liver panel and an assessment of fibrosis come early. FIB-4 can be calculated from results already taken, and MRI quantifies liver iron directly without a biopsy.
Glucose, HbA1c and, where symptoms suggest it, pituitary and gonadal hormones cover the other organs iron reaches. Diabetes and loss of libido are both classical consequences and both are frequently attributed to something else.
Alcohol needs asking about plainly, because it accelerates iron-related liver damage substantially and reducing it changes the outlook independently of any iron treatment.
The family matters as much as the individual. Inheritance is recessive, siblings carry the highest risk, and finding a relative before organs are affected is a materially better outcome than finding them afterwards.
What usually causes it
Listed from most to least common — not from most to least serious.
- Very common
Hereditary hemochromatosis
The dominant explanation when both are raised and CRP is normal. HFE genotyping confirms it, and treatment by venesection is straightforward and effective once started.
- Common
Alcohol-related liver disease
Raises both, and coexists with genetic loading often enough that finding one does not exclude the other. A raised GGT or MCV alongside.
- Common
Metabolic liver disease with iron loading
Fat and iron accumulate together in some people. Saturation is usually less raised here than in genetic loading, and the metabolic markers are present.
- Common
Repeated transfusions — in people with thalassemia, sickle cell disease or marrow failure
From the history. Each unit delivers iron the body cannot excrete, and the treatment is chelation, not venesection.
- Uncommon
Chronic viral hepatitis
Damaged liver cells release stored iron. Serology distinguishes it, and treating the virus is what matters.
- Uncommon
Ineffective erythropoiesis
Thalassemia and some marrow disorders drive absorption up independently of transfusion. The blood count points here.
- Rare
Non-HFE hemochromatosis
Other genes cause the same loading, and some forms present younger and more severely. Considered when the picture is clear but HFE genotyping comes back negative.
- Rare
Excessive iron supplementation
Requires substantial and prolonged intake in someone with normal absorption control, so it is rarely the full story on its own.
What is usually checked next
- HFE genotype Confirms hereditary hemochromatosis and enables family testing, which is where much of the benefit sits.
- Liver panel with a FIB-4 score Assesses whether fibrosis has developed, calculated from numbers already measured.
- MRI quantification of liver iron Measures loading directly and has largely replaced biopsy for this purpose.
- HbA1c, glucose, and hormone testing where symptoms suggest it Covers the pancreas and pituitary, both of which iron reaches and both of which are commonly attributed elsewhere.
- Testing first-degree relatives Recessive inheritance puts siblings at highest risk, and finding them before organ damage is a materially different outcome.
When to seek care sooner
- Emergency Confusion, drowsiness, or a swollen abdomen
- Same day Breathlessness, ankle swelling, or an irregular heartbeat
- Same day Yellowing of the eyes or skin
- Soon New diabetes, or bronzed skin
- Soon Joint pain in the knuckles of the index and middle fingers
- Soon Loss of libido, absent periods, or unexplained fatigue
Questions worth bringing to your appointment
- Has HFE genotyping been arranged?
- Do my liver results suggest any scarring, and has a FIB-4 been calculated?
- Is MRI available to measure the iron in my liver directly?
- Should my siblings and children be tested?
- How much does my alcohol intake matter here?