TSH fluctuates considerably and can even be affected by the time of day the blood was drawn.
Your FT4 is very low in the range. Midrange is the target for FT4, and yous (0.89) is way down in the bottom tenth of the range. T3 uptake is considered an obsolete test and offers very limited information. Your doctor should be testing free T3.
The FT4 range is flawed because when it was established, many of the supposed "normal" population actually had undiagnosed thyroid disorders. Much of the lower half of the range should most likely not be considered "normal".
No, if I were you, I'd pursue being treated for thyroid. Your FT4 is much too low, and I'm sure that's giving you symptoms.
TSH does not correct itself. However, since it's a pituitary hormone, it can be influenced by many factors other than thyroid hormone levels. It often does not accurately reflect thyroid hormones.
I'd find a new doctor. A good thyroid doctor will recognize that your FT4 level is too low and will treat you for it. I think you've found what's wrong. Now you just need to find a doctor who knows it, too.
Thank you for that helpful info. That TSH was 11/2009... I asked for all 3 to be done and on 1/15/2011 and 4:50 pm I had these tests done. The results are TSH: 2.580 Ref range of 0.500-4.700 ulU/ll. T3 Uptake: 1.100 Ref reange of 6-1.370 T3 uptake units.
T4, Free: 0.89 Ref range of 0.78-2.19 ng/dl. Before going further I was told and appears to me to be in normal range. I had read fluctuations occur at different times of the day. Also with half a thyroid, is it possible the TSH without treatment corrects itself? Maybe I am eating something that is helping? I would appreciate very much your comments on these levels before letting go of my issues being connected to Thyroid. Thanks you again..
Seven or eight years ago, AACE recommended changing TSH reference range to 0.3-3.0. Most labs and doctors (as well as yours) have not caught up with the "new" range. According to this new range, your TSH of 3.63 is considered hypo.
Your doctor is committing the worst sin when it comes to thyroid...testing nothing but TSH. Free T3 and free T4 should be tested EVERY time you have labwork. T3 and T4 are the actual thyroid hormones, and their levels are much more important than TSH. Keep in mind that FT4 levels often have to be close to midrange and FT3 levels in the upper half of the range before all symptoms are resolved. Just being in the bottom of the range is seldom sufficient. Good thyroid doctors know this.
If I were you, I'd find a new doctor. You definitely need to see someone else. This doctor will keep you feeling sick.
It's often a good idea to pre-interview a prospective doctor over the phone (probably through a nurse). Ask which tests the doctor regularly orders for his thyroid patients. You want to hear all three: FT3, FT4 and TSH.
Best of luck.
Just recieved most recent TSH from Lab
TSH 3.630 reference range: 0.500-4.700 ulU/ml
Hope this helps.
Thanx
We really need current results to comment. Ask for reference ranges as well since these vary lab to lab and have to come from your own lab report.
Thanks for responding.
Waiting to hear back from Nurse to give 2010 lab results. I have pulled from records from 2006 and TSH result was 2.17 Units 0.49-4.67uU/ml. Will post newer when I get it. Does this alone help? Also did not have high cholesterol until 50yrs old. Thank you again!
Please post the actual results of your thyroid labwork. Include reference ranges as these vary lab to lab and have to come from your own lab report.
Your symptoms sound hypo. Many labs and doctors use obsolete ranges and don't understand that being within the population range limits does not mean that you are in the proper range for YOU personally.
If you can post those labs, we can be more specific.