Originally Posted by sammy64
Hypothyroidism/improperly treated hypothyroidism can cause low ferritin levels.
Do you have any recent thyroid labs to share? FreeT4, FreeT3 and TSH?
This will help us determine if your levels have been optimized....if they haven't, a dose adjustment could very well help.
Please be sure to post the ranges since they vary from lab to lab.
Sammy64, thanks for your reply. I posted this question within another one of my posts just today. It was the post asking about my Free T4 level dropping when adding Liothyronine (T3).
Wow, I didn't know that an improperly treated thyroid could cause low Ferritin level. When I was 4 I started taking Synthroid and took it until I was 18. I never had any symptoms at all the entire time and was eventually weaned off of the Synthroid and told that I would always have just a slightly enlarged thyroid. I am 42 now and just started having symptoms of fatigue and achiness so I asked my MD to test my thyroid levels. Maybe being untreated for years and years caused my ferritin level to drop so low?
Here are blood test results
I am still waiting on the most recent Free T3):
TSH (.10-5.50): 3-1-11: 1.5
Free T4 (.8-1.7ng/dL)
Free T3 (210-440)