Differential Diagnosis
Euthyroid hyperthroxinemia syndrome
- Elevated T4, normal TSH, T3
- Pregnancy, Neonate, Acute hepatitis, Drugs (estrogens, heroin), Acute psychosis, Thyroid hormone autoantibodies
Anxiety neurosis or mania (lab nl)
Hypermetabolism (e.g., anemia, cancer)
Lab tests differentiate well