Management of Hyperferritinemia with Normal CBC

Initial Diagnostic Workup

The American Association for the Study of Liver Diseases recommends measuring fasting transferrin saturation (TSAT) alongside ferritin, as TSAT <45% effectively rules out primary iron overload and indicates that hyperferritinemia is due to secondary causes requiring targeted treatment rather than phlebotomy 1, 2, 3
If TSAT <45%, iron overload is unlikely and secondary causes predominate (>90% of cases) 1, 2, 3
If TSAT ≥45%, proceed to genetic testing for hemochromatosis 1, 2, 4

Over 90% of hyperferritinemia cases are explained by non-iron overload conditions, and systematically evaluating inflammation by checking CRP and ESR is recommended 1, 2
Evaluating liver disease by checking AST, ALT, hepatitis B/C serology, assessing for alcohol use, and NAFLD/metabolic syndrome is also recommended 1, 2, 3
Checking CK for muscle damage and considering CT imaging if clinical suspicion of malignancy, especially with very high ferritin (>10,000 μg/L), is advised 1, 3

If TSAT ≥45%, evaluate for hemochromatosis by proceeding with HFE genetic testing for C282Y and H63D mutations 1, 2, 4
C282Y homozygotes should confirm diagnosis of HFE hemochromatosis and initiate phlebotomy therapy 1, 2, 4
If TSAT <45%, treat underlying conditions such as NAFLD/metabolic syndrome, address alcohol use, treat infections, and optimize inflammatory conditions 1, 3

Ferritin <1,000 μg/L indicates very low risk of cirrhosis, and liver biopsy is not needed if age <40, normal ALT, and no hepatomegaly 1, 2, 4
Ferritin >1,000 μg/L requires consideration of liver biopsy if elevated AST, hepatomegaly, or age >40 years to assess for cirrhosis 1, 2, 4

If HFE hemochromatosis is confirmed, screen all siblings with ferritin, TSAT, and HFE genetic testing (25% chance of being affected) 1, 4
Consider testing first-degree relatives after appropriate genetic counseling 1, 2