Hi all,
I'm new here, coming over from the Pernicious Anaemia forum. For some background, I discovered I was B12 deficient with macrocytic anemia October 2016, and have been self-injecting B12 for the past 4 months. While the B12 has helped tremendously, I still feel notably tired and have a host of other symptoms that perfectly fit the hypothyroid picture. I ordered some follow-up tests and found out today that I have low T3/freeT3, but normal T4 and TSH. I've posted the relevant results below. From my limited research, it sounds like this is a not a problem with the thyroid glad itself, but could be triggered by other endocrine issues, related to inflammation, autoimmune problems, or chronic illness. I've also heard that pharmaceutical treatment for low T3 is typically ineffective, and that the only way to treat is to address the underlying cause. Can anyone advise on likely causes for low T3, and what treatments are most effective?
Results:
T3 UPTAKE
25 (22-35%)
T4 (THYROXINE), TOTAL 7.1 (4.5-12.0 mcg/dL)
FREE T4 INDEX (T7) 1.8 (1.4-3.8)
TSH 1.44 (0.4-4.5)
T3 REVERSE, LC/MS/MS 22
(
8-25 ng/dL)
T3, TOTAL 58
LOW (76-181 ng/dL)
T4, FREE 0.9 (0.8-1.8 ng/dL)
T3, FREE 1.7 LOW (2.3-4.2 pg/mL)
Red blood cell count 3.66 LOW (3.80-5.10)
MCH 34.0 HIGH (27.0-33.0)
MCV 99.2 (80.0-100.0)
Absolute Eosinophils 11 LOW (15-500 cells/uL)