Muscle atrophy can also happen if you are bedridden or unable to move certain body parts due to a medical condition. Astronauts, for example, can also experience some muscle atrophy after a few days of weightlessness. Other causes for muscle atrophy include: 1  lack of physical activity for an extended period of time. 2  aging.  alcohol-associated myopathy, a pain and weakness in muscles due to excessive drinking over long periods of time.
In addition, TSH tests are used to help diagnose a condition called subclinical hypothyroidism, which usually causes no outward signs or symptoms. In this condition, you have normal blood levels of triiodothyronine and thyroxine, but higher than normal levels of TSH. Nov. 10, 2015.
Tests. Laboratory Tests. The first test a health practitioner will usually order to detect thyroid dysfunction is a test for thyroid stimulating hormone (TSH) . If the TSH level is abnormal, the health practitioner will usually order a test for free thyroxine (free T4) to confirm the diagnosis.