Thyroid lab: Thyroid stimulating immunoglobulin is an antibody that usually produces graves's disease, the most common cause of hyperthyroidism, as well as causing problems with connective tissue growing behind the eyes and on the shins. You should not have any in your blood, the healthy result is "absent", or less than the lab's cutoff, which may be "1.3 tsi units".
Answered 9/25/2012
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