Table 6.

Matrix effect, recovery and process efficiency (n = 6).

	Low conc. (120 ng/ml)	Med conc. (1500 ng/ml)	High conc. (17,000 ng/ml)
LF mean peak area × 10e4
Set 1b	4.72	57	492
Set 2	4.62	57.2	491
Set 3	3.89	46.4	409
IS mean peak area × 10e4
Set 1	5.42	4.96	3.84
Set 2	4.99	4.81	3.72
Set 3	4.41	4.28	3.44
ME
LF	97.9	100.4	99.7
IS	92.1	96.9	97.1
RE
LF	84.3	81	83.4
IS	88.3	88.9	92.3
PE
LF	82.5	81.3	83.1
IS	81.4	86.2	89.6

IS: Internal standard; LF: Lumefantrine; ME: Matrix effect; PE: Process efficiency; RE: Recovery.