Common "Thyroid Function Test" queries answered by top doctors | iCliniq

Thyroid Function Test

Thyroid function test is the blood tests done to diagnose thyroid problems. It includes checking the levels of TSH (Thyroid Stimulating Hormone), T3 (Triiodothyronine), T4 (Tetraiodothyronine), FT3 (Free T3), FT4 (Free T4), etc. This test can be done at any time of the day, as fasting is not needed.

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I am taking 75 mg of Synthroid. Is my dose sufficient for pregnancy period?

Query: Hello doctor, I am 16 weeks pregnant and hypothyroid. I am currently taking 75 mg per day of Eutirox (Synthroid) during weekdays and 100 mg per day on the weekends. About a month ago, I got my TSH and FT4 levels tested and the results are: TSH 1.65 mU/L FT4 1.2 ng/dL Reference values: 1st trimeste...  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query and from what you have mentioned it appears that your requirement is increased during pregnancy. You have not mentioned what was the dose that you were taking before getting pregnant. However, you can increase the dose from the current twice pe...  Read Full »

Can my low T4 levels affect my baby's brain development?

Query: Hi doctor, I am five weeks pregnant now. Currently, my T3 is 1.05 ng/mL, T4 is 5.0 μg/dL, TSH is 27.62 μIU/mL. I started Thyronorm 75 mcg today. What if my T4 was low from the past five weeks? Has it affected my baby already? Will it affect the baby's brain development?  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query about your thyroid function test results, and it appears that you have hypothyroidism. I would like to say that even if you were diagnosed at five weeks, it does not cause brain damage to your baby so quickly. Besides, your T4 and T3 are still ...  Read Full »

Is the dosage of my thyroid medicine for hypothyroidism correct?

Query: Hello doctor, TSH is 5.59, T3 2.7, T4 1.3. Current Thyroid dosage 6.25 mg Monday to Saturday, 32.5 on Sunday. Is this a correct dosage? Patient is on dialysis as well for kidney failure.  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query and from what you have mentioned it appears that you are having chronic kidney disease (CKD) and hypothyroidism and your thyroid test results show that it is still uncontrolled. You must take Nature Thyroid 32.5 mg two days a week Saturday and ...  Read Full »

Should I consider taking medication for my thyroid levels?

Query: Hello doctor, For the past six months, I was severely fatigued and had unstable mood swings. At my regular check up, I found out my T4 levels are borderline. I think T3 is normal, but not optimal. Here are the levels: TSH 1.73 (0.45 to 4.5) T3 2.7 (1.4 to 4.4) T4 0.83 (0.8 to 1.8) My general physici...  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query and understand your concerns. From what you have mentioned, it appears that you have a normal thyroid function test results. There is no need to take any medications at all. Even if you are planning a pregnancy, this result means that you do no...  Read Full »

Why do I have thyroglobulin antibody?

Query: Hello doctor, I had depression symptoms. When I checked thyroid, it was normal. but when I checked my thyroid antibody the result shows thyroglobulin antibody (ATG), serum: 32.77 IU/mL.  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query and from what you have mentioned, it appears that you have antithyroglobulin antibodies. The presence of antibodies only suggests that you may develop thyroid dysfunction in the future but as of now your thyroid gland is functioning well. I wou...  Read Full »

My TSH level is quite high and I experience hair fall. Are they related?

Query: Hi doctor, I am 31 years old female. My weight is 108 lbs. I have raised TSH level of 7.5 mIU/mL. I have severe hair fall, and my iron, vitamin D3, and vitamin B levels are normal. How to bring my TSH level to a normal range?  Read Full »


Dr. Shaikh Sadaf

Answer: Hi, Welcome to icliniq.com. I have gone through the attachment (attachment removed to protect patient identity). You have raised TSH levels. But it is not significant enough to necessitate treatment. You can repeat your thyroid function test after three months again to make sure that it has not ri...  Read Full »

I am experiencing issues after taking Thyroxin. Why?

Query: Hello doctor, I am a 46-year-old female, and I am pre-menopausal. My present weight is 120 lbs, and my height is 5.1 feet. Eight years ago, I have been diagnosed with under-functioning of my thyroid and since then I have been taking the medication, Thyroup. I started this medication at 25 mcg. But, ...  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query. From what you have mentioned, it appears that you have hypothyroidism. From seeing your recent TSH (thyroid-stimulating hormone) values in your recent reports (attachments removed to protect patient identity), I suggest that you must increa...  Read Full »

I am dealing with abnormal thyroid functions. Kindly help.

Query: Hi doctor, A 51-year-old female is presenting with abnormal thyroid functions, primarily manifesting as hot flashes. Notably, her TSH (thyroid stimulating hormone) is low at 0.088, and FT-4 is recorded at 0.99. A thyroid ultrasound revealed an enlarged thyroid, while a fine-needle aspiration (FNA) ...  Read Full »


Dr. Shaikh Sadaf

Answer: Hi,Welcome to icliniq, and thank you for choosing us as your health care provider. I understand your medical condition, and I am here to support you. I have reviewed your inquiry, and while it seems that the 51-year-old woman may have hyperthyroidism, I would need to personally examine the laborator...  Read Full »

Kindly explain the thyroid test result related to pregnancy.

Query: Hello doctor, I just wanted to know the result of my thyroid profile test because it is saying something about pregnancy, and I am scared of that. Currently, I am taking Thyronorm 75 mg and Inderal 20 mg.  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query, and from what you have mentioned, it appears that your TSH (thyroid stimulating hormone) is high, and therefore you must increase the dose of Thyronorm (Thyroxine sodium tablets) to 100 mcg once daily. Repeat your thyroid function test after t...  Read Full »

My thyroid medicine makes me sick. Should it be changed?

Query: Hello doctor, I have been diagnosed hypothyroid. I am currently taking WP Thyroid. I have taken Armour and Nature-thyroid. They all make me sick to my stomach. I tried adding generic T3 and it made my symptoms worse, that is, hair loss, cold hands and feet, weight gain, fatigue, GERD, and constipati...  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query and from what you have mentioned it appears that you have hypothyroidism. However, you have missed mentioning the thyroid function test results in detail, so as to enable me to suggest an appropriate drug for you. Hope you revert with your thy...  Read Full »

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