Top
15
Doctor insights on: Tsh With Reflex T4

Share
1

1
My free T4 is high 19.30 pmol/l and my TSH is also high 4.530 mlu/l. What does this mean?

My free T4 is high 19.30 pmol/l and my TSH is also high 4.530 mlu/l.  What does this mean?

Few possibilities: These labs seem at odds, with TSH suggesting overactive thyroid and ft4 underactive thyroid. Free T4 tests can be inaccurate in some people who have interfering substances present. Another possibility is a tumor in the pituitary secreting too much TSH resulting in thyroid overactivity, and high thyroid hormone levels. This is quite rare, however. Your doctor can help sort this out. ...Read more

Dr. Quang Nguyen
923 doctors shared insights

Thyroid Stimulating Hormone (Definition)

A TSH test measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland and tells the thyroid gland to make and release the hormones thyroxine ...Read more


3

3
My t4 free is 0.70 and my tsh reflex free t4 is 29.2. What does this mean and what do I need to do?

My t4 free is 0.70 and my tsh reflex free t4 is 29.2. What does this mean and what do I need to do?

Hypothyroidism: This is diagnostic of hypothyroidism and should be treated with thyroid hormone replacement which hopefully was done by the doctor who got these labs. While without a little more history is there is the remote chance of thyroiditis, it is unlikely with a TSH in this range. While EASILY TREATABLE, hypothyroidism can be a serious and even eventually a life threatening disease. ...Read more

4

4
TSH W REFLEX FREE T4 TSH, 3RD GENERATION (0.40-4.00) uIU/ML My results are 1.10 I had this test taken. Can you explain what the results mean?

TSH W REFLEX FREE T4 
TSH, 3RD GENERATION (0.40-4.00) uIU/ML My results are 1.10 

I had this test taken. Can you explain what the results mean?

Normal, but...: THIS IS A NORMAL THYROID SCREENING TESTS. There are rare diseases thyroid that can happen with an normal normal TSH, but you would have symptoms of thyroid disease or other evidence of central hypothyroidism or thyroiditis in a "euthyroid phase," which would be rare and require much more history. If there is ongoing concern see an endocrinologist. IF YOU GENERALLY FEEL WELL GREAT, IT IS NORMAL! ...Read more

See 2 more doctor answers
5

5
TSH reflex free T4 test = 2.51 (normal range 0.35-4.50). I've read hyperthyroidism still possible if TSH normal. Do I need another test?

TSH reflex free T4 test = 2.51 (normal range 0.35-4.50).  I've read hyperthyroidism still possible if TSH normal.  Do I need another test?

TSH: Highly unlikely. That said, your doctor should have ordered TSH and T3 (liothyronine) as well as T4. Please go back to him/her or if you are not satisfied have a friend or family refer you to a better doctor. ...Read more

6

6
TSH w/reflex to T4 was 0.25. T4 free 1.2. T3 free 2.7. Tsh level was higher and synthroid (thyroxine) 137mg. Still on same dosage. Would this cause fatigue?

TSH w/reflex to T4 was 0.25. T4 free 1.2. T3 free 2.7. Tsh level was higher and synthroid (thyroxine) 137mg. Still on same dosage. Would this cause fatigue?

Possibly.: The low TSH with associated normal free T4 and free T3, (liothyronine) suggests borderline hyperthyroidism (overactive thyroid) which can cause fatigue. However, one should seek a thorough medical exam prior to concluding that the symptom of fatigue is not due to some other problem. ...Read more

7

7
Tsh with reflex free T4 1.09, free T4 1.00 t3 (liothyronine) total 91 .Feel horrible very weak, hair falling, weight gain endo and GP said I'm fine no further tests?

Tsh with reflex free T4 1.09, free T4 1.00 t3 (liothyronine) total 91 .Feel horrible very weak, hair falling, weight gain endo and GP said I'm fine no further tests?

Thyroid: The lab numbers look OK. Weight gain is no good for you as you know. Please go online and look up the many articles a bout food. My favorite is "NuVal" - look it up. Also consider seeing an athletic trainer. ...Read more

8

8
TSH w/reflex to T4 was 0.25. T4 free 1.2. T3 free 2.7. 4 months ago TSH 2.01. Synthroid (thyroxine) 137mg year. Fatigue weight gain hair loss. Suggestions?

TSH w/reflex to T4 was 0.25. T4 free 1.2. T3 free 2.7.   4 months ago TSH 2.01.  Synthroid (thyroxine) 137mg year. Fatigue weight gain hair loss. Suggestions?

Not hypothyroid: Your TSH was within normal range(0.4-0.6 ) 4 months ago indicating you were not hypothyroid then and were on the proper dose of Synthroid (thyroxine). Your current Free T4 is within normal limits. However your TSH is slightly low which suggests that your current dose of Synthroid (thyroxine) is slightly too high and can be reduced. YOU ARE NOT HYPOTHYROID and your symptoms are not due to this. ...Read more

10

10
I have a blood test done and my TSH reflex to free T4 is 4.53 .50-4.30 miu/l is that bad?

I have a blood test done and my TSH reflex to free T4 is 4.53 .50-4.30 miu/l is that bad?

I agree to a point!: Tsh slightly elevated. Your body thinks your thyroid is low. The most common cause for hypothyroidism is hashimoto's thyroiditis, which can be indentified by the presence of anti-thyroglobulin antibodies and anti-tpo antibodies. Have these tests. If positive, i would place you on thyroid immediately. I would also have my free-t3 checked as well. Some do not convert T4 to t3! ...Read more

See 1 more doctor answer
12

12
What to do if I had a blood test done and my TSH reflex to free T4 is 4.53 .50-4.30 miu/l is that bad?

What to do if I had a blood test done and my TSH reflex to free T4 is 4.53 .50-4.30 miu/l is that bad?

Further workup: A TSH above normal indicates that your brain is telling your thyroid it needs better thyroid function. Have your free T4, free T3 (liothyronine), (liothyronine) Reverse T3 (liothyronine), (liothyronine) thyroglobulin and TPO antibodies, Ferritin, and SHBG levels checked to ensure the thyroid and tissue utilization/conversion to active thyroid is occurring. Furthermore, these levels should be optimized...TSH 3.6, low Rev T3 (liothyronine) ...Read more

See 1 more doctor answer
13

13
I had a TSH REFLEX TO FREE T4 blood test done, my result is 3.70 (0.40-4.50 mIU/L), is this normal? Thank you.

I had a TSH REFLEX TO FREE T4 blood test done, my result is 3.70 (0.40-4.50 mIU/L), is this normal?   Thank you.

Thyroid function: That appears to be within the normal range, based on the laboratory standard you provided. ...Read more

14

14
My TSH is 9 & my TSH Reflex to Free T4 is 1.29, I still feel Fatigued & I don't feel well should I have my Dosage of Levothyroxine increase to 100 MCG?

My TSH is 9 & my TSH Reflex to Free T4 is 1.29, I still feel Fatigued & I don't feel well should I have my Dosage of Levothyroxine increase to 100 MCG?

TSH values: The TSH is your pituitary gland at the bottom of your brain talking to your thyroid gland saying "I don't see enough thyroid hormone around here." It stands for Thyroid Stimulating Hormone. You should speak to a good endocrinologist about your situation pronto and yes you should be on a higher dose of thyroid replacement hormone. ...Read more

15

15
Tsh w reflex to free t4 component results value std range 2.55 0.45-4.5 is my test results good or bad at 2.55?

Normal: The value for TSH in the scenario you decribed is normal. However, like all lab tests, interpretation must be done with attention to the bigger picture. ...Read more

Dr. David Sneid
1,403 doctors shared insights

Thyroxine (Definition)

Thyroxine is a thyroid ...Read more