Analytes

Linearity

Sensitivity

Precision (intraday, n = 5)

Precision (inter-day, 3d/n = 6)

Slope

R2

LOD (ng/mL)

LOQ (ng/mL)

RSD%

RSD%

Mitragynine

92.5

0.9987

0.0123

0.0356

1.55

1.70

7-hydroxymitragynine

87.5

0.9951

0.0691

0.215

2.12

2.71