what are the units punchy? mIU/L?
did you have anything like aspirin or anything in your system when you gave the blood?
great background article on the TSH reference range controversy:
http://thyroid.about.com/od/gettestedan ... stwars.htm
...Currently, at most laboratories in the U.S., the reference range for TSH tests is approximately 0.5 to 5.0. Depending on the lab, you may seem some variations, i.e., 0.4 to 5.5, or 0.6 to 5.7, etc., but generally, 0.5 to 5.0 is considered typical of many labs.
...After noticing that patients who had TSH levels in the higher end
of the normal range tended to go on to develop hypothyroidism
more often than those in the lower end of the spectrum, researchers delved more fully into understanding the validity of the reference ranges in use
...recommendation in January 2003 by the American Association of Clinical Endocrinologists (AACE) that doctors "consider treatment for patients who test outside the boundaries of a narrower margin based on a target TSH level of 0.3 to 3.0
so on to high TSH and potential deficiency issues...
let's start with iodine:
http://books.google.ca/books?id=a-pSOMM ... +dietetics
p.624: As T4 falls, TSH secretion is increased and stimulates thyroid activity, including T4 secretion, thereby helping to maintain T4 levels. This stimulation is ineffective in severe iodine deficiency, so blood levels of T4 remain low and TSH high.
http://jcem.endojournals.org/cgi/conten ... /86/6/2360
Damaged Reproduction: The Most Important Consequence of Iodine Deficiency
...In 1998, over one third of the world’s population lived in areas of iodine deficiency (1). Most countries, including many in western Europe, are involved.
...Hypothyroxinemia, elevated serum TSH, enlargement of the thyroid (by 10–50%), and goiter are the most obvious consequences for the pregnant woman. They can be prevented by adequate iodine supplementation (14, 15). Because the increased demands for iodine continue during lactation, an iodine-deficient woman may face several years of exaggerated iodine loss