T3 And T4 Levels

T3 (Triiodothyronine) and T4 (Thyroxine) are hormones produced by the thyroid gland. The average level of T3 is 80 to 180 ng/dL, and T4 is 4 to 12 ug/dL. Increase or decrease in this levels causes metabolic disorders like hypothyroidism and hyperthyroidism.

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Can a double dose of Levothyroxine help until I get to see a doctor?

Query: Hello doctor, I got my lab results recently. I have an appointment with the thyroid doctor in a week. I am afraid of going to the ER plus I have muscle spasms, body jerks, and confusion. Two days ago, I took a double levothyroxine dose of 125 mcg. Yesterday, I added 5 mcg synthetic T3, ma...  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. I suggest that you take tablet Levothyroxine 50 mcg once daily keeping in mind your age and based on your weight and lab results. Consult your specialist doctor, ...  Read Full »

Why does my boyfriend have fever, hives all over the body, and a swollen thyroid gland?

Query: Hello doctor, My boyfriend is 39 years old and is a healthy person. After getting a shot of COVID-19 vaccination about a month ago, he had a slight fever. However, he started getting cold, became very weak, and only wanted to sleep. Also, he started having a fever and hives on his back, chest, arms...  Read Full »


Dr. Aqsa Zafar

Answer: Hello, Welcome to icliniq.com. I understand your concern and would be happy to help. The thyroid gland produces important hormones that play a role in your metabolism. Your boyfriend's symptoms are because of lower than normal production of thyroid hormones. Also, thyroid disease can sometimes ca...  Read Full »

I do usually feel tired and lazy. How can I improve?

Query: Hi doctor, I had a full blood count done and the report mentioned that there were microcytic normochromic cells noted. What does the report mean? Am I anemic or vitamin deficient? What do I do to get better? What are the concerning signs from this report? I do usually feel fatigued and lazy. How can...  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hello, Welcome to icliniq.com. Microcytic RBC (red blood cell) means that the size of the RBC is decreased. Usually, it is seen in iron deficiency anemia. But, your hemoglobin level is within the range. So, anemia is ruled out. Excess stress, anxiety, being overworked, lack of exercise, lack of slee...  Read Full »

What could be the reason for the change of hyperthyroidism to hypothyroidism after taking medication?

Query: Hello doctor,I am a 35 year old male. I had a hyperthyroid since the last five years and was taking Carbimazole 5 mg thrice a day for the last two and a half years. Then, last month, I got my complete physical test done, and I got to know that my hyperthyroid had shifted to hypothyroid. So, the do...  Read Full »


Dr. Shaikh Sadaf

Answer: Hello, Welcome to icliniq.com. I just read your query about your thyroid dysfunction and saw your reports in detail (attachment removed to protect patient identity). It appears that you were diagnosed with hyperthyroidism initially and were treated accordingly. The problem occurred when you had a sl...  Read Full »

Suffering from subclinical hyperthyroidism with anxiety and palpitations.

Query: Dear Doctor, I am trying to figure out what is wrong with my 15 year old daughter. Her symptoms have developed most significantly over the past few months, and include depression, weakness, constant light-headedness, shortness of breath (even when sitting still), difficulty taking a deep breath (ca...  Read Full »


Dr. Minal Mohit Vohra

Answer: Hi, It is really sad to know about your daughter. 1. As a matter of fact your daughter seems to have acute thyroiditis. Though the thyroid profile has not shown full blown thyrotoxic state, she has subclinical hyperthyroidism with TSH being suppressed. Since how long has she been like this? Thyroidi...  Read Full »

Can you please interpret my thyroid function test results?

Query: Hi doctor, All of a sudden, my skin has become very dry, but it was oily before. So, I got a thyroid profile done, and the values are T3 1.35, T4 12.4, and TSH 0.77.  Read Full »


Dr. Shaikh Sadaf

Answer: Hello,Welcome to icliniq.com.I just read your query about your thyroid function test, and it appears that you have a normal thyroid function. Although it would have been better if you had mentioned the units of each as well.Nonetheless, I would advise you to repeat your thyroid function test after...  Read Full »

My T3 is 208.57, and I am nine months pregnant. Is my T3 level a cause of concern?

Query: Hi doctor, I am 9 months pregnant, and I have some doubts with my recent free T3, T4, and TSH levels. My Triiodothyronine total (T3) is 208.57. What is it? Is it something to worry or is it normal? My TSH is under control, and it is 2.63 now.  Read Full »


Dr. Shaikh Sadaf

Answer: Hello,Welcome to icliniq.com. I just read your query about your pregnancy and your thyroid function test results. It appears that you have hyperthyroidism, but you are rightly treated for it since your TSH (thyroid-stimulating hormone) is normal. The slightly high T3 is not to be worried about, as ...  Read Full »

Can my baby's brain development get affected due to low T4 levels?

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 »

What is the reason for decreased T4 and increased TSH levels in blood?

Query: Hello doctor, I got a blood test done recently. In the reports, which I have attached, most of my results are fine, but some major concerns are my vitamin B12 level is 1477 ng/mL, T4 is 3.8, TSH is 12.63, and platelet count is 140. Is something wrong going on in my body? Are these indicating some ...  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hi, Welcome to icliniq.com. I have seen your reports (attachment removed to protect patient identity). Your T4 level is low, and TSH (thyroid stimulating hormone) is high, it suggests primary hypothyroidism. For which, I suggest Levothyroxine 25 or 50 mcg daily. You also have vitamin D deficiency, ...  Read Full »

What is the cause for having persistent swelling in the arms and legs?

Query: Hi doctor, The patient is a 30 year old female.  She has a persistent swelling in both arms and legs since past six months. The reason for this problem is not yet known. It is also not known which line of doctor needs to be consulted in this regard. Earlier, she complains about trembling in hands, ...  Read Full »


Dr. Pooja Pardhi

Answer: Hi, Welcome to icliniq.com. Swelling all over the body could be due to many causes like liver diseases, heart diseases, kidney diseases, thyroid disease, low albumin level, anemia, drug reaction, etc. As you have mentioned that she had trembling hands previously, it could be due to a thyroid problem...  Read Full »

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