Determination of Morphine in Human Urine by the Novel Competitive Fluorescence Immunoassay

Table 1

Linear regression equations, correlation coefficients, and limits of detection of MOR.

Method	Linear range (μg/mL)	Linear regression equation	R^2	LOD (ng/mL)
Competitive fluorescence immunoassay	0.2–2.5	y = −0.3326x + 0.9329	0.9949	1
GC-MS/MS	0.1–50	y = 0.9401x − 194.9	0.9900	100