What should your TSH level be?
TSH normal values are 0.5 to 5.0 mIU/L. Pregnancy, a history of thyroid cancer, history of pituitary gland disease, and older age are some situations when TSH is optimally maintained in different range as guided by an endocrinologist. FT4 normal values are 0.7 to 1.9ng/dL.
How do you interpret TSH results?
A normal range for TSH in most laboratories is 0.4 milliunits per liter (mU/L) to 4.0 mU/L. If your TSH is higher than 4.0 mU/L on repeat tests, you probably have hypothyroidism. Your doctor may also order a T4 test. Most of the T4 in your blood attaches to a protein, and when it does, it can’t get into your cells.
Why is a TSH test ordered?
Why do I need a TSH test? You may need a TSH test if you have symptoms of too much thyroid hormone in your blood (hyperthyroidism), or too little thyroid hormone (hypothyroidism). Symptoms of hyperthyroidism, also known as overactive thyroid, include: Anxiety.
What is the best time of day to take a TSH blood test?
The best time to give your blood sample is in the morning, as the thyroid levels can fluctuate in the evenings. Also, if you are taking medications, you need to stop using them, and better consult your doctor about stopping them from whence. The tsh blood test is made within minutes.
Does caffeine affect TSH test results?
It is known that high doses of caffeine (200 mg/kg) may affect the secretion of several hormones, and in short-term experiments (1week) a reduction in TSH secretion was shown after a daily caffeine intake [7].
How quickly can TSH levels change?
In both tests, the blood is taken at the same time of day because TSH levels can fluctuate over the course of 24 hours. Subclinical hypothyroidism is diagnosed when both TSH readings are high but the thyroid hormone thyroxine is still within the normal range.
Why is broccoli bad for your thyroid?
Cruciferous vegetables, such as broccoli and cabbage, are full of fiber and other nutrients, but they may interfere with the production of thyroid hormone if you have an iodine deficiency.
How do you know your thyroid is off?
Larger appetite than usual. Sudden weight loss, even though you’re eating the same amount of food or more. Fast or uneven heartbeat or sudden pounding of your heart (palpitations) Nervousness, anxiety, or irritability.