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

Table 2

The accuracy and precision for quantification of N-IBA and MA.

Compounds	Nominal concentration (ng/mL)	Intraday ()		Interday ()
		Accuracy (RE, %)	Precision (RSD, %)	Accuracy (RE, %)	Precision (RSD, %)
MA	2.05	110.1	5.4	121.9	10.0
	10.27	101.8	3.5	101.0	3.6
	20.53	101.1	4.0	110.0	9.9
N-IBA	1.83	96.2	5.1	110.7	11.6
	9.14	98.5	1.7	100.1	4.3
	18.28	97.2	2.7	103.6	6.4