Table 5.

Comparison of evaluated method validation parameters between the current study and two previously published reports

	Current study	Liu et al. [21]a	Huang et al. [20]b
Sensitivity	X	X	X
Linearity	X	X	X
Carryover	X
Imprecision	X	X	X
Recovery	X	X	X
Extraction efficiency	X
Matrix effect	X	X
Process efficiency	X	X	X
Matrix interference	X		X
dilution	X
Specificity	X
Stability	X	X	X

^aThe parameter defined as "extraction recovery" by Liu et al. [21] is equivalent to "process efficiency" in the current method.

^bThe parameter defined as "recovery" by Huang et al. [20] is equivalent to "process efficiency" in the current study and was determined for plasma, not urine.