Table 1.

Inpatient warfarin response during hyperthyroid storm.

Day of warfarin	Venopuncture INRa	Warfarin dose (mg/day)	TSHb (μIU/mL)	Free T4 c (ng/dL)
1	1.18d	5	0.006	>7.77
2	1.27	5
5	3.02	5
7	4.41e	5

^aINR: international normalized ratio, goals 2-3.

^bTSH: thyroid stimulating hormone, reference range 0.450–4.500 μIU/mL.

^cFree T₄: free thyroxine, reference range 0.82–1.77 ng/dL.

^dINR was baseline level obtained prior to warfarin dose.

^eINR result posted after patient had been discharged from hospital.