The thyroid hormones , thyroxine ( T 4 ) and triiodothyronine ( T 3 ), are tyrosine -based hormones produced by the thyroid gland primarily responsible for regulation of metabolism. An important component in the synthesis of thyroid hormones is iodine . The major form of thyroid hormone in the blood is thyroxine (T 4 ), which has a longer half-life than T 3 . The ratio of T 4 to T 3 released into the blood is roughly 20 to 1. Thyroxine is converted to the active T 3 (three to four times more potent than T 4 ) within cells by deiodinases (5 -iodinase). These are further processed by decarboxylation and deiodination to produce iodothyronamine ( T 1 a ) and thyronamine ( T 0 a ).
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Premium Questions (114)
I had TSH of 10.7 put on levo .5 about two months now TSH is in normal range but t3 is low. Is that normal.
I am currently taking thyroxine - at 200mg per day - I stupidly increased it by 50mg per day to lose weight but i now find myself an anxious mess. i am also taking Oxyelite powder 1gram per day.
What is the fastest...
Hello Dr. I have a question for you. I had thyroid cancer in 2008. I had my thyroid and multiple lymph nodes removed. I take Levothyroxine 200 mcg (Mon - Sat) and 100 mcg on Fri. My tsh is extremely low because my doctor wants to keep the cancer...
Can taking a synthetic hormone such as levothyroxin for hypothyroidism cause seborrheic dermititis?
hi,
i have hypothyroidsm and my TSH value is 16.63.Will this affect of becoming pregenant?
and If i become pregnant at this time will it be safe?need some suggestions...
My daughters TSH is 465, She has not had any synroid for two years. Now she has a SGOT of 150 are these related and how at risk is she.
my daughter is 42 has no ins. Her thyroids are really swollen. What should she do for treatment? She has no ins.
Hii , I ahve got HYPOTHYROID and I am unable to understand my report . Can u pls explain me .
Hello ,I recently been under a lot of stress. Had a baby and my gallbladder removed same month and almost lost her and moved too. Anyways she is 7 months now and my period has not resumed yet.. I have no cramps and am...
What can cause an elevated thyroid level in a 21 y/o male, drugs,alcolhol, steroids? He is extremely anxious and agitated, the doctor says his thyroid level is high
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Online Doctor Chat (50) - Thyroid hormone
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User : My mother had her thyroid removed at age 17. She took synthroid for 28 years, then about five years ago (around menopause), decided she no longer believed in taking it. She has been off of any kind of thyroid hormone replacement at all for...
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User : just turned 17 years old. i Hav'nt had my period since December 20 of 2007. Me and my boyfriend been having sex. every time we have sex he sperms inside me. Out of no where a few days ago i all of...
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User : i have done my thyroid test and the results are as under
User : tsh-10.01
User : t3-98.66 and t4-8
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User : i had done this test around...
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User : I am having a bit of gas problem for the last 1 week or so
User : and I am not feeling hungry for most parts of the day
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Public Forum (293) - Thyroid hormone
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My girlfriend has hypothyroidism and I need to know when I should take her to the hospital, she is in the middle of having a really bad episode
Hi doc, its a long story plzzz read and reply G im 29 , ttc 8 years having pco overloaded my tsh is 5.3 taking thyroxine, once before breakfast since 3 month taking glucophage 500mg ,4 twice a day now my doc planned iui for me last month i did hsg my tubes were unblocked but the results says some fibroid on cervix , my transvaginal shoews...
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I’m 28 years old, 158 cm and 51 kg. I am 4 months pregnant . I take a examination at this Monday (16 weeks pregnant) but the blood test result didn’t sound very good: The 2 figures were abnormal: AST = 79 ( reference range = 0-40 U/L) ALT = 110 (reference range = 0-65 U/L). The Hepatitis test were gave negative result and I had the Hepatitis A...
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sir, i had black spots on my hands so i was prescribed tenovate and retino a for it and i have used it for a month and suddenly i saw very thin and black hair are growing on my face especially on upper cheeks and chin .i have gone though hormonal tests also like.. DHT ,17ADHTS.DHEAS, prolactin ,insulin and thyroid.all the reports are normal.Now...
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do hemoglobin level increases or decreases in hypothyroidism during pregnancy?
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i just found out i have thyroid hormone disorder. is it ok to take a diet pill called krtosurge?
I have been on 125 mcg of thyroxine for number of years and 25 mcg of liothyronine I am struggling to lose weight I do two intensive training sessions a week plus two to three others per week I dont fancy eating a lot of the time but do eat I sleep a fair bit but not in the day I feel quite bloated and have bouts of IBS any suggestions? Thanks...
[x]Your question has been posted successfully to the Public Forum. Our experience tells us that Public Forum questions take upto 72 hours to get answered. If you would like to get your answer sooner, Ask a Doctor Now» « Back to DashboardPCOS I am 27 year old married girl.my height is 5 1 .My weight is 50 kg.I m suffering from pcos .I am having...
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Good Day to all. Sir, I am 30 years Old female and recently I have been diagnosed that level of my T3 and T4 are quite low and TSH is quite high. I have consulted a Endocrinologist in this regard and she advised me to start THYROXINE 50Mcg. I wanted to know is there any side effect of the said Medicine and should i take it with glass of MILK or...
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hi i am 32 in my 15th week of pregnancy . taking duphaston twice daily as i had minute hematoma and low lying placenta. just got my tsh and t3, t4 test. my tsh levels are .23 as range starts from 0.55 and t4 are 13.6 as highest limit is 12.50. does that mean i have hyperthroidism and if have then is taking dupaston safe or does it effect...
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