Aa
Low tsh free t4 free t3?
Is it normal to have several hypothyroid symptoms with extensive family history of it (hashimotos) and has tsh of 1.01 free t4 .9 and free t3 of 2.9. My tsh over the past frew years has contnuously decreased from 3.4 to now 1.0. It seems like if my thyroid hormones are a little low my tsh should increase.
Unfortunately, many doctors really only look at TSH, even if the order FT3 and FT4. TSH can be influenced by any number of factors other than thyroid hormone levels.
FT3 and FT4 reference ranges are also severely flawed. One reason for this is that many undiagnosed hypos made it into the "normal" group. For that reason, many find that FT4 has to be midrange before symptoms are relieved. FT3 often has to be upper half of range.
You might want to do some research on secondary hypothyroidism. Sometimes the pituitary doesn't produce enough TSH to stimulate the thyroid to produce hormones. The result is that, even with a healthy thyroid, you are hypo due to pituitary malfunction. This could explain your falling TSH.
Your symptoms are all consistent with hypo. Would your doctor agree to a trial dose of thyroid meds to see if you feel better?
FT3 and FT4 reference ranges are also severely flawed. One reason for this is that many undiagnosed hypos made it into the "normal" group. For that reason, many find that FT4 has to be midrange before symptoms are relieved. FT3 often has to be upper half of range.
You might want to do some research on secondary hypothyroidism. Sometimes the pituitary doesn't produce enough TSH to stimulate the thyroid to produce hormones. The result is that, even with a healthy thyroid, you are hypo due to pituitary malfunction. This could explain your falling TSH.
Your symptoms are all consistent with hypo. Would your doctor agree to a trial dose of thyroid meds to see if you feel better?
Not treated for thyroid disease. I have been told my thyroid is fine.i tested negative for thyroid antibodies
Both my free t3 and free t4 are low normal. Exhaustion, poor memory, hair falling out, dizziness, headaches daily, migraines often, heavy painful periods, low low energy, inability to loose weight (after 40 lb weight gain in 1.5 years). I want to have kids and feel this is preventing that bc I can barely function as is. Everything else is normal except pth of 87 and 1,25 dihydroxyvitamin d of 89. Calcium 9.3 iodized calcium 1.24 vitamin d 40. Doctor said we will continue to track my pth and ca levels. He said it could still be high from being low in vitamin d a year ago at.....my level was 22
Typically, as your thyroid hormones decrease, TSH increases. However, TSH is a very poor indicator of thyroid status. What are the referene ranges on your FT3 and FT4? Ranges vary lab to lab, so you have to post them with results.
Are you being treated for a thyroid issue?
What are your symptoms?
Are you being treated for a thyroid issue?
What are your symptoms?
Have an Answer?
You are reading content posted in the Thyroid Disorders Community
We tapped the CDC for information on what you need to know about radiation exposure
Endocrinologist Mark Lupo, MD, answers 10 questions about thyroid disorders and how to treat them
A list of national and international resources and hotlines to help connect you to needed health and medical services.
Herpes sores blister, then burst, scab and heal.
Herpes spreads by oral, vaginal and anal sex.
STIs are the most common cause of genital sores.
