TSH- THYROID STIMULATING HORMONE
is a Thyroid function test.
It is the most important single test to monitor thyroid hormone replacement therapy
. A normal TSH excludes thyroid disease. It is low in Hyperthyroidism
and high in Hypothyroidism.
Detected by immunoassay method , its normal range in adults is 0.5 to 5.0mU/L.
Since thyroid illnesses have an autoimmune basis, leucoderma can be associated with it.