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Thyroid Disorders
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Posted 9/28/2015 6:48 AM (GMT -8)
Hi everyone,
I have had my thyroid checked in march due to my mom and sister having hypothyroidism. my results were:

Free T4: 1.13 (range .8 - 1.8)

Free T3: 3.4 (range 2.0 - 4.4)

At the same time I was diagnosed with lyme disease and have been treating it. My doctor did not think my thyroid levels were low and did not treat it. I haven't gotten these levels re-checked since lyme treatment but am experiencing weight gain even though I am exercising regularly and eating healthy along with waking up with swollen fingers/wrists. Are these levels low?
Posted 9/28/2015 7:45 AM (GMT -8)
Hi ,
What was your TSH ? it is the most accurate measure of thyroid function .
Posted 9/28/2015 7:48 AM (GMT -8)
I just went through my labs and do not see that my TSH was tested. I also had my reverse T3 tested which was 14.1 (range 9.2 - 24.1)
Posted 9/28/2015 7:58 AM (GMT -8)
Are you on any thyroid medications ?

In case the answer is yes then you should get your TSH tested six weeks after each dose change, if that comes as normal then you should repeat the TSH in another six weeks (12 weeks since the change) , that is because it might need 12 weeks to see the TSH rising again after going down after an increase of the dose of Levo !

If the answer is no , then you should get it checked ASAP .

If your TSH is abnormal ( range recommended by AACE is 0.3 - 4.12 ) , then you should get tested for Hashimoto's disease, which can cause both hypo and hyperthyroidism, those tests are antiTPOab and TGab .

Best ,
Posted 9/28/2015 9:19 AM (GMT -8)
I second what hypoHashimoto said. The only way to tell what your thyroid is truly up to is to test the full thyroid panel at the same time. They all need to be tested together to get the full picture as to what is going on. TSH alone will not tell you much about what your body is doing, just as the other tests as stand alones will not either. ****Reference ranges are always required in order to interpret your lab results.****

Here are the components of a "basic" TSH blood panel:
TSH
Free T3
Free T4
Reverse T3

If Hyperthroid (such as autoimmune Graves Disease, but hyper is not always an autoimmune disorder) is suspected:

TSI - thyroid stimulating imunoglobulin
TSII - thyroid binding inhibitory immunoglobulin

And if Hypothyroid (such as autoimmune Hashimoto's Disease, but hypo is not always an autoimmune disorder) is suspected:

TPO or TPO/ab - thyroid peroxidase antibody
TG - thyroidglobulin
TG/ab - thyroglobulin antibody

Post Edited (There's Always Hope) : 9/28/2015 11:30:56 AM (GMT-6)

Posted 9/28/2015 9:30 AM (GMT -8)
To answer your original question as to if your FT3 and FT4......

Optimal for each person can vary a bit within the normal range. Not to get too technical here, but here is the interpretation:

Your FT3 is just over half of the normal range (half is 3.2) at 3.4. Many experts say that the body operates better if this level is closer to 3/4 of the normal range, which would be 3.8. (Personally, my FT3 is too low at 2.9).

Your FT4 is low. It should be at least half of the normal range, which would be 1.3. Yours is 1.13. The 3/4 of the normal range would be 1.55.
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