Table 2.

Molecular weight, limit of detection and lower limit of quantitation with precision and bias

		LOD		LLOQ
Substance	Molecular weight	nmol·mL−1	ng·mL−1	nmol·mL−1	ng·mL−1	CV (%)	Bias (%)
Heroin	369.4	0.0002	0.07	0.008	3.0	14	4
6-MAM	327.4	0.0011	0.36	0.006	2.0	10	−1
Morphine	285.3	0.0009	0.26	0.006	1.7	18	−6
M3G	461.5	0.0005	0.23	0.02	2.2	14	−5