Question 1

do i need to fast for thyroid test?

Accepted Answer

Iodine: Some institutions may ask you to fast after midnight the night before thyroid scan.  You should avoid eating foods which contain high iodine content before the scan.  Again, different places may ask you to perform these dietary for different amounts of time.  Check with the site performing your scan.

Question 2

do i have to fast before a liver function test and thyroid test?

Accepted Answer

Neither: You do not need to fast for the liver function tests.    For the tsh, fasting is not generally needed, although there may be some variation in this tests between fasted and fed individuals.  For more specialized tests (t3, t4, etc.), patients taking replacement treatment need to be aware of when they took the medication in relation to the test (it may be more elevated closer to the dose).

Question 3

my thyroid test showes 0.64 not 64?

Accepted Answer

TSH? Probably fine.: I'm assuming the "thyroid test" you're referring to is "thyroid stimulating hormone" or tsh. This is one of the most commonly measured thyroid-related tests.

The normal range depends on your lab and varies; but it's about 0.4 to 4.0. 

So a value of 0.64 in that case is good - if it was 64, then i'd worry!

Question 4

when your thyroid test low how low is bad?

Accepted Answer

Not really bad.: The TSH level is just a test.  There is no number that is really bad and all numbers can be fixed.  There is a continuum of disease from mild to very symptomatic and some people may have a lot of symptoms despite relatively normal numbers.  Best thing is to look at how you feel.  If you feel fine then the numbers are good enough.

Question 5

which type of thyroid test is suitable for me?

Accepted Answer

TSH: The most sensitive test for determining thyroid levels is the TSH level.  Low levels imply that the thyroid function is high, whereas high TSH implies that the thyroid function is low.  The thyroid levels (t4, t3) should be measured if the TSH is abnormal.

Question 6

what to do if interpreting thyroid test results?

Accepted Answer

Thyroid tests: In general, when interpreting thyroid tests, a high TSH is indicative of hypothyroidism (under active thyroid) and a low TSH is indicative of hyperthyroidism (overactive thyroid). Your doctor may also check your free T4 and free T3 (liothyronine) levels which may be low if hypothyroid and high if hyperthyroid. That being said, the tests are not always so straightforward so make sure an MD interprets your results

Question 7

what should i do to prepair myself for thyroid test?

Accepted Answer

Make sure: That you're on time. Otherwise, there is no preparation for blood tests. Nuclear medicine tests may ask you to avoid iodine intake, but that's generally not a problem.

Question 8

thyroid test came back at 2.63 is that a good number?

Accepted Answer

Discuss with Dr.: You need to contact the person that ordered the test to  get clarification.  When a lab result is just a number it  is relative to a certain lab's protocols. Usually, the result will have a "normal" range after the number and if you are in that range you are fine.  If not in the range then you need the person that  ordered the test to interpret what that 2.63 means for you.

Question 9

does a negative thyroid test mean i don't have a thyroid condition?

Accepted Answer

Most probably but  !: It means you are neither hypo or hyperthyroid of course it would not rule out thyroid lesions such as cysts or nodules.

Question 10

why do i need to have my thyroid test repeated last one slightly high ?

Accepted Answer

Yes: Definitely. Make sure you doctor knows you take lithium, which can interfere with the thyroid and lead to goiter and/or hypothyroidism.

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Doctor answers about:

Do you need to fast for a thyroid test

A member asked:

Do i need to fast for thyroid test?

A member asked:

Do i have to fast before a liver function test and thyroid test?

A member asked:

My thyroid test showes 0.64 not 64?

A member asked:

When your thyroid test low how low is bad?

A member asked:

Which type of thyroid test is suitable for me?

A member asked:

What to do if interpreting thyroid test results?

A member asked:

What should i do to prepair myself for thyroid test?

A member asked:

Thyroid test came back at 2.63 is that a good number?

A member asked:

Does a negative thyroid test mean i don't have a thyroid condition?

A member asked:

Why do i need to have my thyroid test repeated last one slightly high ?

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