Ferritin is an acute phase protein so also increases in the inflammatory response. So elevated ferritin can indicate iron overload, liver damage/disease and various other illnesses. Here is a useful summary. Mild elevations of ferritin (300- 1000 ng/l) are very common and may not mean anything much, but should be investigated to rule out known associated problems. An iron panel will help to rule out iron overload (only about 10% elevated ferritin is associated with iron overload) with the single most sensitive measure being transferrin saturation. > 45% is very suggestive of iron overload, >55% frank overload. Liver function tests will help rule out liver disease etc. Your value is sufficiently high to warrant further investigation.