Lab Testing


Thyroxine (T4) Free Direct


SKU: 001974


Product Description

**NOTE: All laboratory testing requires an authorizing physician in order to complete the laboratory testing. **

This test is used when Free T4 may be indicated when TBG (thyroxine binding globulin) problems are suspected. It can also be used to diagnose thyroid disease and screen for hypothyroidism in newborns.

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