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What number should my thyroid blood test results mean?
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.
What should I do if my TSH level is low?
Standard treatment for hypothyroidism involves daily use of the synthetic thyroid hormone levothyroxine (Levo-T, Synthroid, others). This oral medication restores adequate hormone levels, reversing the signs and symptoms of hypothyroidism. You’ll likely start to feel better soon after you start treatment.
How long do thyroid lab results take?
A thyroid function test is a simple blood test. The blood sample is then sent to the laboratory for analysis and the results are sent back to the doctor who asked for the tests. The results usually take 1-3 days to come back.
What blood tests show thyroid problems?
What blood tests do doctors use to check thyroid function?
- TSH test. Health care professionals usually check the amount of TSH in your blood first.
- T4 tests. A high blood level of T4 may mean you have hyperthyroidism.
- T3 test.
- Thyroid antibody tests.
- Ultrasound.
- Thyroid scan.
- Radioactive iodine uptake test.
How do you read thyroid test results?
The TSH test measures the level of thyroid-stimulating hormone in your blood. The TSH has a normal test range between 0.4 and 4.0 milli-international units of hormone per liter of blood (mIU/L). If you show signs of hypothyroidism and have a TSH reading above 2.0 mIU/L, you’re at risk for progressing to hypothyroidism.
What blood test shows thyroid?
The T4 test and the TSH test are the two most common thyroid function tests. They’re usually ordered together. The T4 test is known as the thyroxine test. A high level of T4 indicates an overactive thyroid (hyperthyroidism).