Thyroxine and triiodothyronine can be measured as free thyroxine and free triiodothyronine , which are indicators of thyroxine and triiodothyronine activities in the body. They can also be measured as total thyroxine and total triiodothyronine , which also depend on the thyroxine and triiodothyronine that is bound to thyroxine-binding globulin . A related parameter is the free thyroxine index , which is total thyroxine multiplied by thyroid hormone uptake , which, in turn, is a measure of the unbound thyroxine-binding globulins.  Additionally, thyroid disorders can be detected prenatally using advanced imaging techniques and testing fetal hormone levels. 
KEEP OUT OF REACH OF CHILDREN. WARNING: NOT FOR USE BY INDIVIDUALS UNDER THE AGE OF 21 YEARS. Consult a physician or licensed qualified health care professional before using this product if you have, or have a family history of,prostate cancer prostate enlargement, heart disease, low “good” cholesterol (HDL), or if you are using any other dietary supplement,prescription drug, or over-the-counter drug. Do not exceed recommended serving. Exceeding recommended serving may cause serious adverse health effects. Possible side effects include acne, hair loss, hair growth on the face (in women), aggressiveness, irritability, and increased levels of estrogen. Discontinue use and call a physician or licensed qualified health care professional immediately if you experience rapid heart beat, dizziness, blurred vision, or other similar symptoms. Made in a facility that may process dairy, peanuts, tree nuts, wheat, fish, barley and shellfish. Do not use if governed by any body that prohibits hormone use.
Women: 19-nor androstenedione is one of the few prohormones that women can benefit from without significant side effects. Women should use the lowest effective dosage levels possible. Most of my female clients report that doses of 100mg per day or less are sufficient to produce desired results; many start with 50mg on training days and monitor results closely.