Research Article

Determination of Glucosamine in Human Plasma by High-Performance Liquid Chromatography-Atmospheric Pressure Chemical Ionization Source-Tandem Mass Spectrometry

Table 3

Absolute recoveries and matrix effect evaluation of glucosamine in human plasma ( š‘› = 5 ).

Nominal concentration (ng/mL)Mean recovery Ā± S.D. (%)R.S.D. (%)Mean matrix effect Ā± S.D. (%)R.S.D. (%)

106.5 9 3 . 3 Ā± 2 . 1 2.25 1 0 7 . 4 Ā± 6 . 9 6.44
852.3 9 6 . 3 Ā± 3 . 1 3.19 1 0 1 . 7 Ā± 3 . 8 3.69
3409 1 0 2 . 2 Ā± 3 . 1 3.08 1 0 4 . 9 Ā± 3 . 2 3.09