A 37-year-old member asked:
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would a thyroid scan rule out everything no matter what the blood test resuslts were?

2 doctor answers
Dr. Brian Wosnitzer
17 years experience Nuclear Medicine
No..: Thyroid scans have poor resolution but show function. Other tests such as ultrasound are better at looking at the anatomy. Blood tests and clinical symptoms are also important. All of these different tests are complimentary and provide different pieces of information about the thyroid.
Answered on Jan 19, 2014
Dr. Gerald Mandell
51 years experience Nuclear Medicine
No: Thyroid scan is only part of thyroid dysfunction workup. Thyroid scan usually shows functioning or nonfunctioning nodules, thyroid gland enlargement, decreased function, or goiter. Laboratory blood testing is extremely important in determining function of thyroid gland, hypo-, hyper-, or normal. Sometimes scan and blood tests differ in findings.
Answered on Jan 26, 2014

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