A 29-year-old female asked:
thyroid ultrasound = no concern ; thy. antibody test showed no autoimmune cause. tsh still high, even on synthroid. ft4 high end of normal. causes???
1 doctor answer
Dr. Richard Zimon answered
58 years experience Internal Medicine
Two thoughts: 1. This sounds like primary thyroid failure ("simple" HYPO-thyroidism) which is "borderline" but is causing the high TSH (Think of the TSH "trying" to "waken" the "sleeping" gland.
2. Synthroid per se (=thyroxine (T-4) is a POOR TSH suppressant ...it needs to be converted to T-3 to suppress the TSH..thus a SWITCH in your thyroid pills to a T-3 may help!
Hope this is helpful
Dr Z
Answered on Oct 12, 2020
1
1 thank
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
Related questions:
A 27-year-old female asked:
Dr. Majd Alfreijat answered
13 years experience Internal Medicine
Hashimoto's!: You could have Hashimoto's thyroiditis which is the most common cause of hypothyroidism and it is possible that some patients could have negative anti ... Read More
A 43-year-old female asked:
Dr. Clarence Grim answered
56 years experience Endocrinology
Thyroid in supplemen: Is someone giving you thyroid hormone? Or is it in any supplements you are taking and you don’t know it?
1
1 thank
A 26-year-old female asked:
Dr. Ali Saberi answered
19 years experience Internal Medicine
No: Thyroid tests regularly fluctuate due to stress. My suggestion is to continue to keep an eye on it. May want to also have doctor examine ur thyroid an ... Read More
1
1 thank
A 27-year-old female asked:
A Verified Doctor answered
A US doctor answered Learn more
Please Clarify!: When you ask "What are the likely causes?", are you referring to thyroid disorders, elevated TSH or thyroid antibodies? Also, the antibody levels ar ... Read More
1
1 comment
1
1 thank
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:
People also searched for:
Connect by text or video with a U.S. board-certified doctor now — wait time is less than 1 minute!
Unlimited visits
$10/month