Thank you for your question.
Can you please mention your age and gender?
Do you have a blood test report that you would like to share with me on here?
What was the level of your haemoglobin?
Please let me know.
Thank you for your response.
Do you know what is your TIBC test result like?
(total iron binding capacity)?
If the iron is low and the TIBC is also low and the ferritin is high then the most likely cause of your low iron is actually due to rheumatoid arthritis itself.
This can actually happen due to any chronic disease.
So I think that your problem i.e. low iron could be related to your rheumatoid arthritis.
Let me know if you have more questions.
Please rate me when you are done.