TSH

Alternative names:

thyroid stimulating hormone; thyrotropin

Normal values:

0.2 to 4.7 mcU/ml

Note: mcU/ml = microunits per milliliter

What abnormal results mean:

Greater-than-normal levels may indicate:

• congenital hypothyroidism (cretinism)
• hypothyroidism; primary
• hypothyroidism; secondary
• thyroiditis

Lower-than-normal levels may indicate:

• hyperthyroidism
• hypopituitarism

Additional conditions under which the test may be performed:

• colloid nodular goiter
• delirium
• dementia
• drug-induced hypothyroidism
• goiter
• graves' disease
• multiple endocrine neoplasia (MEN) I
• subacute thyroiditis
• thyrotoxic periodic paralysis
• toxic nodular goiter