Hi, does anyone know how a reference range can be so different in other labs. I had my Ferritin levels done along with other bloods as I had all the symptoms of anaemia but the doctor said I was fine. The ref range was 12.00 - 300.00ug/L and mine was 36 so it didn't seem too bad. My dad has just had his done in another town and the ref range was 30.00 - 365.00ug/L. This isn't just a small difference and if I'd had mine done at my dads doctors I would have only just been in range. How can this be right? I have now started taking iron as when I got the printout my Haematocrit was low as well but still the doctor said I was fine.