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9 Οκτ 2024 · TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 mU/L—indicate an overactive thyroid (hyperthyroidism). However, there are exceptions to these interpretations and variations as to what a "normal" TSH level is.
- Hypothyroidism
The treatment of hypothyroidism involves taking a drug to...
- T4 (Thyroxine)
T4 functions in your body in a couple of forms. One form...
- T3 (Triiodothyronine)
The total triiodothyronine (T3) test is one of several tests...
- Thyroid Disease and Menopause: What's The Link
Since thyroid disease includes a range of conditions...
- NSAIDs and Your Thyroid
However, single and weekly doses of aspirin and salsalate...
- How to Take Your Thyroid Medication
Hypothyroidism (low thyroid function) is treated with one or...
- Thyroid Testing and Diagnosis
Normal ranges may vary by lab, so keep that in mind if you...
- Thyroid Blood Test
Based on how high or low the different values are—including...
- Hypothyroidism
30 Νοε 2022 · Blood tests that measure the hormones T-4 and T-3 and thyroid-stimulating hormone (TSH) can confirm a diagnosis of hyperthyroidism. A high level of T-4 and a low level of TSH is common in people with hyperthyroidism.
15 Μαΐ 2024 · This thyroid test analyzer will help you understand your TSH, T3, T4, and other thyroid function test results. Select a test and enter your lab value to learn more.
3 Οκτ 2023 · Based on how high or low the different values are—including key hormones such as TSH and T4—the lab can determine which type of thyroid disease you have (hypothyroidism vs. hyperthyroidism) and narrow the possible causes.
5 Σεπ 2023 · A high TSH level indicates that the thyroid gland is not making enough thyroid hormone (primary hypothyroidism). The opposite situation, in which the TSH level is low, usually indicates that the thyroid is producing too much thyroid hormone (hyperthyroidism).
22 Δεκ 2023 · Most of the time, low TSH levels indicate hyperthyroidism. This is also known as an overactive thyroid. Much more rarely, low TSH can be due to a problem with the pituitary gland.
A low level of TSH and high levels of T3 and/or T4 usually means you have an overactive thyroid. Doctors may refer to these measurements as "free" T3 and T4 (FT3 and FT4). What's considered normal varies depending on things such as your age and the exact testing technique used by the laboratory.
