Thyroid Screen Interpretation 

Updated: Nov 02, 2015
  • Author: Alina G Sofronescu, PhD; Chief Editor: Buck Christensen  more...
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Thyroid Screen Interpretation

Regular thyroid screening can help in the detection and management of various thyroid disorders.

Hypothyroidism and hyperthyroidism are common conditions. Approximately 5% of US adults report having thyroid disease or taking thyroid medication. [1, 2]  

Table 1. Thyroid Screen Interpretation (Open Table in a new window)

Condition Thyroid-Stimulating Hormone (TSH) Free T4 T3
Hypothyroidism (mature) High Low Low
Subclinical hypothyroidism High Normal Normal
Hyperthyroidism Low High High
Subclinical hyperthyroidism Low Normal Normal
T3 Toxicosis Low Normal High