Table 1.

UA spectrophotometry quantification at 281 nm by Tecan (Infinite 200 Pro MPlex, Tecan, Milan, Italy) and data are expressed as µg/mL ± SD of four independent experiments. Solution 1 = 150 mcg/mL β-CD + HPMC; Solution 2 = 150 mcg/mL UA + 150 mcg/mL β-CD + 1% HPMC; Solution 3 = 75 mcg/mL UA + 150 mcg/mL β-CD + 1% HPMC; HEXEDRA+ = 75 mcg/mL UA + 150 mcg/mL β-CD + 0.1% Tpmix + 1% HPMC.

	Solution 1	Solution 2	Solution 3	HEXEDRA+
Wash buffer	0 µg/mL	2.1 ± 0.5 µg/mL	1.95 ± 0.8 µg/mL	1.97 ± 0.9 µg/mL
Bottom wash	0 µg/mL	1.9 ± 1.7 µg/mL	1.88 ± 1.3 µg/mL	1.88 ± 0.8 µg/mL