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

Table 2 Trend of thyroid function tests

Laboratory findings	Results					Reference value
Thyroid function	On admission*	Day 3*	Day 5*	Day 7*	Day 10	Reference value
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%

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
*Data were retrospectively measured using stored blood samples obtained on admission Day 1 through Day 7
**Data using pre-amiodarone treatment sera

ISSN: 1471-2261