We need to know what tested at 1300. It's unusual for TSH to get that high; you would have felt so horrible long before it got that high, and would quite likely have gone into myxedema coma, which is a life threatening condition caused from long standing, untreated hypothyroidism.
It's not unusual for thyroid antibody counts to be that high. That would indicate that you have either Hashimoto's Thyroiditis or Graves Disease.
Please clarify which parameter was 1300; and post whatever other thyroid related labs you might have, such as TSH, FT3 and FT4. Be sure to include reference ranges, which vary lab to lab and must come from your own report.
What is 1300?
If that is TSH. That would indicate that you have LOW thyroid. Or Hypo thyroid.
TSH is a hormone that is telling your thyroid to turn on and produce thyroid hormone. So with such a high number your pituitary gland is BEGGING your thyroid to produce hormone.
But apparently for whatever reason your thyroid is not hearing this or can not produce the hormone.
You really need more blood tests to tell us more.
First though, what symptoms are you having?
As far as blood tests DEMAND the following:
Free T4
Free T3
Understand that the "free" test is completely different than "total T4" and "total T3".
the "free" test and counts ONLY the hormone that is unattached or "free" from a protein molecule. Once either hormone is attached to a protein it becomes biologically inactive. That is your body ONLY used the Free T4 to convert into T3. And your body's cell ONLY use the Free T3 hormone.
The "total" test are outdated and of little value since you do not have any idea how many of the hormone molecules are "free" from the protein and are able to be used by the body. The attached hormone is useless so you really don't care about them.
Other tests that many low thyroid patients also find to be low and you may want to be tested are
Vit D3
Vit B-12
Orin
Ferritin
Being low in any one of these will cause fatigue.
When you get these additional tests post the results here also showing the reference ranges as they vary lab to lab. That way we can maybe help you out further.
One last note for now. Even if the tests show you "within range" that may not be good enough. Many people have found you have to be WELL up over 50% of the ranges in order to feel well. So do NOT let a Dr tell you, that "you are normal....it's not your thyroid". That in a lot of cases is simply B.S!