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Table 2 Trend of thyroid function tests

From: Delayed diagnosis of dilated thyrotoxic cardiomyopathy with coexistent multifocal atrial tachycardia: a case report

Laboratory findings Results Reference value
Thyroid function On admission* Day 3* Day 5* Day 7* Day 10
TSH  < 0.01 mIU/L**  < 0.01 mIU/L  < 0.01 mIU/L  < 0.01 mIU/L  < 0.01 mIU/L 0.35–4.94 mIU/L
fT3  > 30 pg/mL**  > 30 pg/mL 27.61 pg/mL 6.25 pg/mL 3.83 pg/mL 1.71–3.71 pg/mL
fT4 3.81 ng/dL** 3.32 ng/dL 2.66 ng/dL 1.81 ng/dL 1.38 ng/dL 0.7–1.48 ng/dL
TgAb      531 IU/mL 0–28 IU/mL
TPOAb      45 IU/mL 0–16 IU/mL
TRAb      11.5 IU/L 0–2.0 IU/L
TSAb      651% 0–120%
  1. TSH: Thyroid-stimulating hormone, fT3: Free triiodothyronine, fT4: Free thyroxine, TgAb: Anti-thyroglobulin antibody, TPOAb: Anti-thyroid peroxidase antibody, TRAb: TSH receptor antibody, TSAb: Thyroid-stimulating antibody
  2. *Data were retrospectively measured using stored blood samples obtained on admission Day 1 through Day 7
  3. **Data using pre-amiodarone treatment sera