Frequently Asked Questions
Common questions about thyroid disease, testing, and treatment.
Frequently Asked Questions
Do I need to fast before a thyroid blood test?
Medical opinions vary on fasting before blood tests. Some doctors recommend fasting while others do not. If fasting is not observed, the TSH value may be slightly lower and the FT4 value slightly higher. It is recommended to always have blood drawn at a consistent time of day for reliable comparisons.
How long after a medication change should I get tested?
After 6 weeks, the values in your blood are stable. So only after at least 4, but preferably after 6 weeks should you have blood drawn again. Some patients wait 8 weeks. The medication's effects may take longer to appear in blood work than expected.
What blood values indicate proper treatment?
The ideal values vary by individual. A TSH value under 2 is almost always desirable, but some people feel best at a higher TSH. With T4 treatment alone, FT4 should be in the upper half of the normal range or slightly above. Normal reference values: TSH 0.4-4.0 mU/l; FT4 9-24 pmol/l.
What is an autoimmune disease?
Not all thyroid disorders are autoimmune — thyroid cancer, for example, is not. Common autoimmune conditions that may co-occur with thyroid disease include pernicious anemia, vitiligo, diabetes mellitus, Addison's disease, and rheumatoid arthritis. Autoimmune disorders can be detected by measuring specific antibodies in the blood.
Are all thyroid diseases autoimmune?
No. Thyroid cancer is not autoimmune, and pituitary conditions can affect thyroid hormone levels independently. While Hashimoto's thyroiditis and Graves' disease are autoimmune, many other thyroid conditions have different causes.
How can I support the Thyroid Ghana Foundation?
You can donate, volunteer, become a member, or partner with us. Contact us at info@thyroidghanafoundation.org or call +233 (024) 337 6304 for more information.
Want to support thyroid health in Ghana?
Your contribution makes early detection and treatment possible.