Table 1.

Thyroid hormone concentrations following administration of various combinations of massive doses of levothyroxine and triiodothyronine in order to “overcome” presumed malabsorption of levothyroxine

Thyroid function tests (07.2017)
Date	Time	TSH [μIU/ml] [Ref. Range 0.4–4.0]	FT4 [pmol/l] [Ref. Range 11.5–22.7]	FT3 [pmol/l] [Ref. Range 2.76–6.45]	Daily dose p.o.
Day 1	10:00	> 75	4.12	3.06	LT4 1700 μg and T3 40 μg
	18:00	nm*	3.99	3.16
	2:00	nm	4.83	2.95
Day 2	10:00	nm	4.67	3.27	LT4 1700 μg and T3 40 μg
	18:00	nm	4.35	3.24
	2:00	nm	4.59	3.01
Day 3	18:00	nm	4.92	2.93	LT4 2200 μg and T3 40 μg
	2:00	nm	4.38	2.87
Day 4	8:00	nm	6.38	2.86	LT4 3200 μg and T3 40 μg
	18:00	nm	5.73	3.29
	2:00	nm	5.78	3.55
Day 5	8:00	nm	5.96	2.93	LT4 3200 μg and T3 40 μg
Day 6	8:00	nm	6.64	3.9	LT4 3200 μg and T3 40 μg
Day 7	8:00	nm	6.96	3.62	LT4 3200 μg and T3 40 μg
Day 15	8:00	nm	6.62	3.81	LT4 1700 μg and T3 40 μg
Day 24	8:00	> 75	5.53	4.19	LT4 3000 μg

*nm = not measured