Thyroid blood tests are an important part of diagnosing and treating thyroid disease. Based on how high or low the different values are—including key hormones such as TSH and T4—the lab can ...

A TSH test measures blood levels of the thyroid stimulating hormone to diagnose a thyroid disorder. Your doctor will order a TSH test if you exhibit thyroid disorder symptoms like hair loss or ...

The neonatal screening program for congenital hypothyroidism was based on simultaneous TSH and free T4 measurements in dried blood on filter ... Table 2 Serum thyroid test results in eight infants ...