Thyroid (TSH, Total T4 and Total T3)
TSH, Total T4 and T3 are measured in this test. (Even if your TSH is good).
You are tired... You would prefer to lie in bed and sleep. Your body feels stiff and rigid and moving hurts. Your mood is depressed or changes rapidly. You feel agitated and sleep badly.
Most thyroid abnormalities result in too little or too much thyroid hormone being made. This leads to many physical symptoms. With an overactive thyroid, these include: a rapid heartbeat, weight loss, nervousness, trembling hands, irritated eyes, sleeping problems and a hunted feeling. In women, an irregular menstrual cycle may also occur.
With a thyroid hormone deficiency, the patient suffers from weight gain, dry skin, constipation, feeling cold easily, fatigue and in women heavy menstrual bleeding
Made in the pituitary gland, an important hormone producing gland in the brain. TSH ensures that the right amount of thyroid hormone (T4 and T3) is always produced. Thyroid hormone regulates the use of energy in the body it has a kind of thermostat function.
This involves measuring the total amount of thyroxine in the blood, including the portion bound to transport proteins. The proteins that help to transport thyroxine through the blood are:
- Thyroxin binding globulin
Is the hormone that arises from T4 and causes the final effect of thyroid hormone. So actually T3 is more important than T4, but we measure T4 to investigate changes in thyroid function.