Phospholipid Adsorption Polymeric Materials for Detection of Xylazine and Metabolite in Blood and Urine

Table 2

LODs, LOQs, and linear relationships of xylazine and DMA.

Matrix	Analyte	LODs (ng/mL)	LOQs (ng/mL)	Linear range (ng/ML)	Linear equation	Related coefficient ()	Spiked concentration (ng/mL)	Recovery (%)	RSD (%)	Matrix effect (%)
Blood	Xylazine	0.3	1.0	2/2000	= 2.37 × 10^3 + 3.15 × 10^2	0.9992	5, 50, 500	101.2, 107.4, 112.5	6.5, 6.1, 4.7	103.1, 105.3, 102.7
	DMA	0.3	1.0	2/2000	= 2.19 × 10^3 + 4.87 × 10^2	0.9981	5, 50, 500	95.1, 97.9, 102.7	8.6, 8.1, 7.2	105.7, 107.7, 104.2
Urine	Xylazine	0.2	0.6	2/2000	= 2.75 × 10^3 + 5.16 × 10^2	0.9993	5, 50, 500	96.9, 110.5, 117.4	6.2, 4.8, 4.3	105.9, 102.6, 101.1
	DMA	0.2	0.6	2/2000	= 2.24 × 10^3 + 4.17 × 10^2	0.9984	5, 50, 500	93.8, 96.7, 101.7	8.1, 7.1, 6.8	108.2, 107.3, 102.7