Table 1.

Absolute recovery (%) of the analytical HPLC method used to quantify albendazole sulphoxide (ABZSO), albendazole sulphone (ABZSO₂), and albendazole (ABZ) in human saliva and blood (DBS) samples.

Matrix	Analytes	Cnominal (µg/mL)	Recovery (%) ± SDa		Mean ± SD
SALIVA	ABZSO	0.05	86.1 ± 10.0	90.3 ± 2.7
		0.5	95.0 ± 7.2
		1	89.6 ± 5.2
	ABZSO2	0.05	89.8 ± 7.6	88.5 ± 1.4
		0.5	86.5 ± 5.9
		1	89.3 ± 8.7
	ABZ	0.05	70.0 ± 6.2	71.9 ± 2.1
		0.5	74.2 ± 10.9
		1	71.6 ± 8.2
DBS	ABZSO	0.2	94.7 ± 3.0	83.1 ± 11.4
		0.6	71.9 ± 7.8
		1	84.7 ± 2.4
	ABZSO2	0.2	89.8 ± 7.6	88.5 ± 1.4
		0.6	86.5 ± 5.9
		1	89.3 ± 8.7
	ABZ	0.2	91.3 ± 11.8	89.4 ± 2.1
		0.6	89.7 ± 16.0
		1	87.1 ± 2.0

^aValues are expressed as arithmetic mean (n = 6) of samples obtained from different patients. C_nominal: nominal concentration.