What does it mean if your ferritin raises dramatically over 6 month period from 90 ug/l in June to 238 range 15-247 ug/
iron 20.8 (range 10.6-33.8 um/l) iron binding capacity 31 (range 24-61?umil/L) iron saturation 0.40 range (0.13- 0.5)
I've never had ferritin over 90 in my life?
It could show you have an infection, inflammation or chronic disease e.g. hypothyroidism not properly medicated.
You could also react quickly to supplementing iron.
Or it could be both.
If you are supplementing iron you need to stop immediately.
The best way to determine if there is any other cause is simply to respond to how do you feel? What is the condition of your skin, hair and nails like?
Agreed, bluebug.
The Royal Australian College of General Practitioners have published this paper on iron which seems to be quite well thought through. Careful reading might help:
Low ferritin, high iron
High Ferritin levels 
High Ferritin.. advice please
High Ferritin - advice please.
High Ferritin!
