DR SARAH MYHILL, UPPER WESTON, LLANGUNLLO, …

Thyroid stimulating hormone (only looks for primary thyroid failure – most thyroid problems in CFS are secondary to poor pituitary function) Ferritin (iron), B12, folic acid and calcium. Perhaps a serum magnesium – which is a completely useless test! This is because serum levels are maintained at the expense of levels inside cells. ................
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