Doctor insights on:
T Uptake Thyroid Profile
May be nothing: If the rest of the tests are normal, and the t3ru (t3 (liothyronine) resin uptake) is abnormal, the thyroid is probably working normally. T3ru reflects the amount of thyroid binding proteins in the blood, and can be high in women taking birth control pills, estrogen or who are pregnant. It's main use is to correct total T4 levels for protein changes, but is less useful since most labs check free T4 instead now. ...Read more
One after the other: The exact scanning time after taking the capsule varies according to the isotope and protocol used. For i-123 and low i-131 the uptake and the scan is usually done at 24 hours. A thyroid probe directed to your neck measures the radioiodine uptake, this is follow by a gamma camera scan which makes an image of your thyroid gland based on the radioiodine distribution. ...Read moreSee 2 more doctor answers
Some Meds, Iodine: Please follow the rules provided by the nuclear medicine/radiology department or imaging center exactly! it is very important. Ask them any ?'s you have. External sources of iodine in the diet can affect the test - for example, seaweed with sushi. Thyroid hormone and antithyroid medications can also affect the results. You want an accurate test, not one confused by these outside influences. ...Read more
Several things: The result of a thyroid uptake test could be abnormally increased or decreased. In the usa, the normal thyroid uptake range is approximately 10-30% at 24 hours. An increased result may be due to various reasons including: grave's disease, multinodular toxic goiter or hashitoxicosis. A decreased uptake could be due to subacute thyroiditis, iodine or amiodarone induced thyrotoxicosis among others. ...Read moreSee 3 more doctor answers
No effect: Low radiation dose thyroid uptake test with radio tracer i123 or i131. Thyroid gland picks up the iodine tracer. I-123 has a shorter half life than i-131 (13 hrs vs. 8.1 days), so use of i-123 exposes the body to less radiation. Thyroid gland function not affected by scan. Should not have test if pregnant or breast feeding. Tests are for thyroid function determining hypo vs hyperthyroidism. ...Read moreSee 1 more doctor answer
I did thyroid uptake test. My results came back as 96.4 percent function of thyroid. What should I know about this?
More info needed: The thyroid uptake test is done to diagnose thyroid problems, particularly thyroid hyper function (hyperthyroidism). You need to ask physician who ordered the test and ask to interpret your results. Previous thyroid blood test results are important to answer your question. ...Read more
Hi, I have elevated PHT and calcium levels. And scans show uptake at 15 min and 3 hours. Also the thyroid is inhomogeneous and hypervascular. The righ?
Hyperparathyroidism: Sounds as if you have hyperparathyroidism. You didn't mention your renal function, though, as chronic kidney disease (CKD) is a very common cause of hyperparathyroidism. You should have your renal function and serum phosphorus levels checked...then get back to us! This condition, hyperparathyroidism, depending on the cause, is very treatable but can cause some serious problems if not. Good luck! ...Read more
Thyroid scan: Iodine will not interfere with the technicium scan, however the tc99 scan does not tell you much. If a thyroid scan is needed, it should be done with radioactive iodine. This will require that you stop taking iodine supplements, which you really do not need to take anyway. See your endocrinologist. ...Read more
How safe is i 123 thyroid uptake and scan test as far as the amount of radiation you are getting during, after the test?
Very safe: The amount of radiation to your thyroid or body is extremely small with a test dose of i123 used for thyroid scans. However, it is a useless test in the evaluation of a thyroid nodule unless your TSH level is below normal. A thyroid nodule of 2.3 cm needs to be biopsied. The thyroid scan is unlikely to change that recommendation. ...Read more
If i don't have graves' disease and my thyroid uptake scan is as follows: range-5% to 30% my readings- 64%, 70%, 65%. What is my best course?
Hyperactive thyroid: Thyroid uptake in range of 64% to 70% usually means overactive thyroid. Graves disease or hyperthyroidism is one cause. An overactive thyroid nodule, thyroiditis, and toxic multi nodular goiter can be other causes. An adenoma of the pituitary gland can sometimes stimulate overproduction of thyroid hormone. Clinical examination, nuclear and/or ultrasound imaging, and various blood tests can help. ...Read moreSee 2 more doctor answers
Endocrinologist says my thyroid 2 low. Tsh-3gen 6.30 FTI 2.4 TotT4 8.8 T-uptake 27.8 wants to increase meds. I have no T gland. No symp. What's low?
Thyroid hormone.: We all need thyroid hormones for proper health. If you had your thyroid removed, you will have to take thyroid replacement meds for the rest of your life. If you are taking them, the level has to be monitored to be sure you are getting enough for your body to function normally. If your level is low, the medicine is increased and the level is rechecked regularly to make sure it is stays normal ...Read more
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Single hot 1 CM nodule on thyroid scan with normal thyroid blood panels & uptake. Chances of malignancy?
Not likely: "hot" nodules are rarely cancer and most often represent benign follicular adenomas. These are also known as "autonomous" nodules because they make thyroid hormone but don't respond to the body's normal signals telling them when to stop making the hormone. The vast majority of thyroid cancer nodules are "cold" on a thyroid scan. ...Read more
Borderline elevated thyroid uptake 31.5 percent, mild thyromegaly, no definite dominant hot or cold nodules. Should I be concerned? See an endocrinol
Thyroid: As an endocrinologist myself I strongly recommend a visit to a local endocrinologist. You will get a full exam and be told the necessary studies needed in a way you will fully understand. ...Read more