One example is sub-clinical hypothyroidism, where a patient will manifest none of the typical symptoms of hypothyroidism, and blood tests will show a normal T3 and T4, but an elevated TSH--indicating that the thyroid gland is requiring a greater-than-normal stimulus to produce a normal level of thyroid hormone.
Another frequently cited example is a sub-clinical thiamine deficiency. A patient with a sub-clinical thimamine deficiency may have low levels of thiamine, but not be manifesting any of the symptoms. However, the administration of intravenous glucose may induce Wernicke-Korsakoff Syndrome or beri-beri by exacerbating the already underlying thiamine deficiency, as thiamine is consumed during normal glucose metabolism.
Researchers Submit Patent Application, "System and Method of Sub Clinical Detecting Mastitis", for Approval
May 02, 2013; By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that...