Question 1

is 10.8 high for total t4?

Accepted Answer

I doubt it: Check the reference range of the lab where your T4 was checked. Most labs do not report it high unless it is over 11.0.

Question 2

what does high t4 level mean?

Accepted Answer

It can mean: An elevated level of thyroid hormone, either due to hyperthyroidism or thyroid inflammation. It can be falsely elevated by estrogen therapy. Other thyroid tests are more reliable. The T3 (liothyronine) you're receiving is potentially dangerous and should not be taken. It can not me measured in the blood and has potential toxicity. Use brand name T4 only if replacement is required, .

Question 3

what does a low t4 free test mean?

Accepted Answer

Low free T4: If a patient is not currently on certain types of thyroid medication, it means low thyroid function. You would need more labwork done to confirm the diagnoses.

Question 4

if my t4 is 10.3 what does this mean??

Accepted Answer

Sounds normal: The best test for diagnosing a thyroid disorder is the TSH and if that was normal your thyroid is fine.  The normal range for T4 is 5-11 so a 10.3 is fine and nothing you should worry about.

Question 5

why is my t4 level extremely elevated?

Accepted Answer

You could have : Overactive thyroid function.  Or you could be on the incorrect dose of thyroid replacement.

Question 6

is a t4 free level of 1.24 high or low?

Accepted Answer

Looks normal: Assays for ft4 differ, but this appears to be about normal.  Check with your doctor.

Question 7

what does it mean when my t4 level is 12.3?

Accepted Answer

Nothing: alone nothing it all depend what your TSH was

Question 8

what could cause my t4 levels to be very low?

Accepted Answer

Depends: Depending on the type of assay - free T4 or an index (that might be low because of binding problems unrelated to thyroid function). Most of the time a true low T4 is due to an underactive thyroid. Rarely the pituitary that controls the thyroid may be low.
See a thyroid doctor.

Question 9

what t4 test results would be considered severe?

Accepted Answer

Wrong question: Thyroid labs more than very slightly outside the reference range or connected with symptoms are a sign that you had better be treated or your life is going to get much worse. Since the life-threatening features of thyroid disease are often unrelated to the actual levels, it would be as misguided to ask 'is this level severe?' as to say 'i'm a little bit pregnant.'.

Question 10

is it true that levothryroxine increase t4 level?

Accepted Answer

Confusing question: Levothyroxine IS ALSO CALLED T4. It can be made by the body or synthetically to treat thyroid problems. It is converted in the body to T3 (triiodothyronine) which is the active form which performs the hormones functions. When given in excess it can create problems from that excess. It is usually used to replace the hormone when the gland does not make sufficient amounts.

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Doctor answers about:

Levoconvex curvature at t4

A member asked:

Is 10.8 high for total t4?

A member asked:

What does high t4 level mean?

A member asked:

What does a low t4 free test mean?

A member asked:

If my t4 is 10.3 what does this mean??

A member asked:

Why is my t4 level extremely elevated?

A member asked:

Is a t4 free level of 1.24 high or low?

A member asked:

What does it mean when my t4 level is 12.3?

A member asked:

What could cause my t4 levels to be very low?

A member asked:

What t4 test results would be considered severe?

A member asked:

Is it true that levothryroxine increase t4 level?

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