Hi Tani,
Different testing methods use different reference ranges. These ranges should be listed below or to the right of your test results. The most common test for TSI uses 125% as a cutoff as this is the range at which TSI levels typically cause hyperthyroidism. If this is your range your TSI result would be considered normal although you could develop Graves' disease at a later time. What are the ranges your lab listed for the antibody tests?
Your thyroid function tests are normal with your actual thyroid hormone levels being more on the low than the high side.
TSI antibodies are thyroid stimulating immunoglobulins and they're also known as stimulating TSH receptor antibodies. At high levels they stimulate thyroid cells to produce more thyroid hormone. Thyroglobulin antibodies destroy thyroid cells and cause hypothyroidism. A titer of 40 is usually within the normal range but without the reference range listed, I can't interpret the results.
Symptoms occur when thyroid antibodies affect your thyroid status, causing hyperthyroidism or hypothyroidism. TSI can cause transient bursts of thyroid hormone that cause transient symptoms, but your thyroid hormone levels don't indicate that this is occurring.
In Graves' disease symptoms can occur before thyroid hormone levels become abnormal so you'd want to have these tests repeated again in a few months. Best, Elaine