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 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. Parth R Goswami

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 »

I have weight gain with reduced menstrual flow. Do I need thyroid medicines?

Query: Hello doctor, I am a 38 year old female. I am having a recent weight gain and menstruation flow is very less than normal. I also have hair fall, tiredness and I feel there is something blocking my throat. Sometimes, I feel cold than other family members. So, I checked my thyroid levels. T3 was 0.8...  Read Full »


Dr. Divakara P

Answer: Hi, Welcome to icliniq.com. Your symptoms do fit into thyroid problem, but as long as the reports are normal you are not a candidate for medication. There is no need to consult an endocrinologist, but yes, some lifestyle changes have to be done. Do daily exercises like brisk walking, jogging or cy...  Read Full »

Which is the best medication to control my T3 and T4 levels?

Query: Hello doctor, I am currently taking NP thyroid 90 mg. I started on 60 mg. Initially, I used 100 mcg of T4 medicine but still had some issues. Once I went to NP, the T3 seems to help, but once my T4 hormones dropped, I could feel some of my symptoms again. Free T3 4.98 pg/mL. 1.58 - 3.91 pg/mL Fre...  Read Full »


Dr. Rahul Kackar

Answer: Hello, Welcome to icliniq.com. You should decrease the dose of NP thyroid to 60 mg or shift back to Levothyroxine if you tolerate it well.  Read Full »

Can pregnancy be planned if the TSH level is 7.19?

Query: Hi doctor, I am 32 years old and having a kid. Currently, my TSH value is 7.19. I am using 75 mg thyroid medicine. How much dosage should I take? I am planning for another kid. Shall I plan for a pregnancy at this stage?  Read Full »


Dr. Deep Dutta

Answer: Hi, Welcome to icliniq.com. It is important not to miss any dose. It is important to take your medication in an empty stomach and at least 45 minutes before food. It is advisable to keep thyroid-stimulating hormone TSH less than 2.5 mU/L before planning for pregnancy. Please repeat T4 and TSH after ...  Read Full »

Please help my husband with an unknown allergy and sexual incompetence.

Query: Hello doctor, My husband is suffering from unknown allergy for the last 2 years. He has consulted many doctors and has done many tests, but no positive result yet. He takes Allegra or Montec every day; else he gets rashes all over the body. He is also having filaria for over 5 years and takes medic...  Read Full »


Dr. Shalini Patodiya

Answer: Hi, Welcome to icliniq.com. By allergy, if you mean red raised rashes, then that is known as urticaria. So, that means he is suffering from chronic urticaria and impotency. There can be many causes including thyroid, which can cause both the above issue. Also, rarely Allegra - Fexofenadine can cause...  Read Full »

Which of the two opinions for my TSH value is correct?

Query: Hi doctor, I am very concerned about my health. I made an appointment last year with an endocrinologist. I had a laboratory work and my TSH was 3.4. It was considered normal on laboratory ranges. But, my primary doctor said that 3.4 is high on what it should be consider the new normal. My LDL chole...  Read Full »


Dr. Bindiya Thakkar

Answer: Hello, Welcome to icliniq.com. Work up of hypothyroidism involves just TSH (thyroid stimulating hormone) or TSH and free T4. TT3 (triiodothyronine) or reverse T3 has no role in the diagnosis of hypothyroidism and it is useful in hyperthyroidism. TSH more than 10 is hypothyroidism and definitely need...  Read Full »

What is causing all my symptoms?

Query: Hi doctor, I have the following problems in my daily life. Social phobia, inferiority complex, lack of concentration and fear of everything. I am not interested to do anything. I am leading a sedentary lifestyle. I also masturbate a lot. I am thinking consistently about my future and living without ...  Read Full »


Dr. Ashok Kumar Choudhary

Answer: Hi, Welcome to icliniq.com. First of all, inferiority complex, social phobia, poor concentration and fear of everything can be a manifestation of depression or anxiety disorders. Having said this, we need to understand that the same symptoms can be present in abnormal thyroid function. The presence...  Read Full »

What do high T3 levels and thyroid peroxidase antibodies indicate?

Query: Hello doctor, My free T3 level is 17.6 pmol/L, thyroid peroxidase Ab is 509 IU/ml, plasma-c reactive protein 54.8 mg/L. I would like to get a prescription for thyroid, if needed. I am currently on Bisoprolol 1.25 mg.  Read Full »


Dr. Zulfiqar Ahmed

Answer: Hi, Welcome to icliniq.com. You have hyperthyroidism means increased thyroid hormones. Your TPO (thyroid peroxidase) is also increased. How are your symptoms? Like tremors, loss of weight, nervousness, etc.? How bad are your symptoms? Do you have pain in front of your neck? Have you d...  Read Full »

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