Simultaneous Determination of Methamphetamine and Its Isomer N-Isopropylbenzylamine in Forensic Samples by Using a Modified LC-ESI-MS/MS Method

Table 3

Recoveries and RSDs of MA and N-IBA spiked in a suspected drug sample.

Compound	Sample
	Background (ng/mL)	Add (ng/mL)	Recovery (%)	RSD (%)
MA	0.48	2.05	87.8	2.8
		20.50	112.6	2.1
		51.30	112.1	1.9
N-IBA	5.28	1.83	96.7	0.5
		18.30	105.1	3.4
		51.20	108.1	0.9