Table 6. Dilution Integrity of HHC in Plasma.

	test sample-HHC (7500.00 ng/mL)
	test sample-HHC 375 ng/mL (dilution factor 20×)
sample no.	estimated conc. (ng/mL)	estimated conc. (before dilution) (ng/mL)	accuracy (%)
1	333.02	6660.40	88.81
2	332.00	6640.00	88.53
3	314.81	6296.20	83.95
mean	326.61	6532.20	87.10
SD	10.23	204.64	2.73
CV (%)	3.13	3.13	3.13
evaluation			passed