I have had long term low ferritin for about 2 years now. I am on iron supplements but as soon as I stop - my ferritin goes back down to <5mg or so. A new GP mentioned last week that we need to start investigating further - does anyone know what department I’ll be referred to? I’m already under neurology for severe muscle weakness & migraines. Was just wondering if anyone has been through similar or is a medic who could shed some light? No history of stomach problems like coeliacs and my periods aren’t heavy either. My actual haemoglobin is fine. Thanks [flowers]