Change in tsh level

[Jessga30115]

I was diagnosed with hypothyroidism in 2009, my level is generally around 3.5 - 3.9.  I take 150 mcg levotbyroxine daily.  I was tested in Jan 2017 and my  tsh level was 3.95.  I was tested again last week and my level came back at 1.22.  Isn't it odd that it changed so much in 3 months?  Should my medication be modified?

[gimel]

If TSH is the only thing being tested for your thyroid status,  that is totally inadequate.  A good thyroid doctor will treat a hypothyroid patient clinically by testing and adjusting Free T4 and Free T3 levels as needed to relieve symptoms, without being influenced by resultant TSH levels.  Symptom relief should be all important, not just test results, and especially not TSH results.  

You can read all about this in the following link.  I highly recommend reading at least the first two pages and more if you want to get into the discussion and scientific evidence supporting all that is recommended.  

http://www.thyroiduk.org.uk/tuk/TUK_PDFs/diagnosis_and_treatment_of_hypothyroidism_issue_1.pdf

So please tell us about any symptoms you have.  

[Jessga30115]

My t4 and t3 levels were tested as well and they are in the normal range,  but I still have major fatigue, hair loss, constantly cold, weight gain.  

[gimel]

Are those Total T4 and Total T3, or Free T4 and Free T3?  Most all of Total T4 and Total T3 are bound to protein and thus rendered inactive.  The small portions that are free of protein are called Free T4 and Free T3.  Those are biologically active and you should make sure they are tested every time you go in for tests.  Free T3 is metabolized by all the cells of the body to produce the needed energy.  

Due to the erroneous assumptions used to establish reference ranges for Free T4 and Free T3, just being within the low limit of the range is inadequate for many people.  If you will post the actual results and reference ranges shown on the lab report we can better assess your status.  Those symptoms are frequently related to being hypothyroid.