Low TSH is not always a bad thing. Have you been diagnosed with a thyroid issue? Are you on any kind of thyroid med(s)?
Total T4 is considered to be an obsolete test, since Free T4 tells how much hormone is actually available for conversion to the usable T3. Since that's what your doctor ordered, can you please give us the reference ranges, since these vary from lab to lab and must come from your own lab report.
FYI - for future testing you might want to request Free T4 (FT4) and Free T3 (FT3). Free T3 is the actual hormone that is available for immediate use by the body and correlates best with symptoms.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.