C and D on the FDA 2877 and insert the word or  between the Affirmations. Note: The U.S. Customs Service will treat this entry as a. D Declaration for purposes of duty. Such requests must be made on the FDA 766; include Items 1, 2, and 3 under Declaration C, a. statement of the need to use the option C or D Declaration, a statement of how the product(s) will be brought into compliance and the.
There are 2 reasons that could be the cause behind your low TSH: 1  Your glands simply aren't producing enough;  Your thyroid gland is producing too much of the thyroid hormone which signals to your brain to stop producing anymore.
TSH causes the thyroid gland to make 2 hormones which helps to control your bodyâs metabolism. These hormones are known as T3 and T4. TSH levels can help determine why the dysfunction is occurring, whether it is due to a damaged thyroid gland or a problem with the pituitary.he thyroids job is to produce thyroid hormones which is secreted into the blood and then carried to every tissue in the body. Deficiency of your thyroid levels can lead to various ailments. Listed below are a few that can cause concern. 1  Increased heart rate. 2  Weight loss or weight gain.