Thyroid Physiology

Conditions

Thyrotoxicosis ↑(hyperthyroidism)

Hypothyroidism

Thyroid Nodules

Comparison

Choosing Wisely

Tests Only apply when Usage
TSH is abnormal Confirm Hypothyroidism (T4) or Thyrotoxicosis ↑(hyperthyroidism) (both)
Anti-TPO Ab Hypothyroidism Confirm
Thyroid US Palpable mass Nodules vs diffused hyperplasia

Investigation

Thyroid History

Thyroid Exam

Lymph Node Exam

Thyroid

TSH (< 5)

RAIU

TSI

Anti-TPO Ab

Thyroid US

Thyroid FNA

Thyroglobin