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. 2022 Aug 9;32(8):897–904. doi: 10.1089/thy.2021.0604

Table 2.

Descriptive Statistical Summary of Total Levothyroxine Pharmacokinetic Parameters (Baseline Adjusted)

Parameter, unit Treatment
A (15 minutes)
B (30 minutes)
N Arithmetic
Geometric
N Arithmetic
Geometric
Mean CV% Mean CV% Mean CV% Mean CV%
AUC0–48, h × ng/mL 33 1141.19 29.22 1093.48 30.77 33 1239.97 22.25 1210.13 22.89
AUC0–72, h × ng/mL 32 1622.86 27.14 1565.75 27.81 33 1724.83 21.83 1684.38 22.64
Cmax, ng/mL 33 44.80 32.30 42.50 34.74 33 51.80 26.09 50.00 28.15
tmax,a hours 33 1.486 (0.985, 7.980) 33 1.486 (0.985, 5.987)
a

Median (min, max) presented for tmax.

Treatment (A): levothyroxine sodium 4 mL × 150 mcg/mL oral solution, 15 minutes before breakfast.

Treatment (B): levothyroxine sodium 4 mL × 150 mcg/mL oral solution, 30 minutes before breakfast.

AUC, area under the curve; CV, coefficient of variation; Max, maximum; Min, minimum; N, number of observations.