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Thyroid Function Screening

0070133

Triiodothyronine, Free (Free T3) 0070133

3005977

T Uptake 3005977

3005978

Thyroxine, Total T4 3005978

2006108

Thyroid Stimulating Hormone with Reflex to Free Thyroxine 2006108

0070145

Thyroid Stimulating Hormone 0070145

0070474

Triiodothyronine, Total (Total T3) 0070474

About This Topic

The recommended first-line tests for thyroid status in all individuals, including pregnant individuals, are Thyroid Stimulating Hormone (TSH) (0070145) or Thyroid Stimulating Hormone with reflex to Free Thyroxine (2006108). Thyroid panels containing obsolete tests such as T Uptake (3005977) and Thyroxine, Total T4 (3005978) should not be ordered.

Recommendation

Triiodothyronine, Free (Free T3) (0070133) and Triiodothyronine, Total (Total T3) (0070474) should be ordered only for specific circumstances (e.g., abnormal TSH/normal free T4 and suspicion of thyroid disease).

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Thyroid Function Screening