HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
159 Doctors Online

By proceeding, I accept the Terms and Conditions

Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

HCM Blog Instant Access to Doctors
HCM BlogQuestions Answered
HCM Blog Satisfaction

What Does These TSH, RT3 And FT3 Levels Indicate With History Of Hashimoto S?

Hello, I have Hashimoto s and have been on thyroxine for a year since diagnosis (TSH originally at 98.7). I take 125mg mon-fri & 150mg sat-sun (Thyroxine T4) I have been feeling awful for the past 2 months and think my RT3 ratio is to blame. TSH: 1.82 (high for me) FT3: 4.8 RT3: 598 Ratio: 8.02 (if i calculated properly) Do you think i am not converting T4 to T3 correctly? Thanks
Thu, 21 May 2020
Report Abuse
General & Family Physician,  's  Response
Hi,

RT3 is a metabolite of T4. The body converts T4 to T3 and also converts T4 into rT3. It is believed that the body produces rT3 in times of severe illness or starvation as a mechanism for preserving energy. Other health conditions that may trigger changes in thyroid test results, including rT3, without thyroid disease include surgery, bone marrow transplantation, heart attack and kidney disease. rT3 is not a reliable test and is not routinely done.

Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Saranya Ramadoss, General & Family Physician
I find this answer helpful
Note: For further follow up on related General & Family Physician Click here.
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Related questions you may be interested in


Loading Online Doctors....
What Does These TSH, RT3 And FT3 Levels Indicate With History Of Hashimoto S?

Hi, RT3 is a metabolite of T4. The body converts T4 to T3 and also converts T4 into rT3. It is believed that the body produces rT3 in times of severe illness or starvation as a mechanism for preserving energy. Other health conditions that may trigger changes in thyroid test results, including rT3, without thyroid disease include surgery, bone marrow transplantation, heart attack and kidney disease. rT3 is not a reliable test and is not routinely done. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Saranya Ramadoss, General & Family Physician