Table 3. Stability of Selegiline in Rat Plasma^e.

nominal concentration (ng/mL)	autosamplera stability (%)	short-termb stability (%)	long-termc stability (%)	freeze–thawd stability (%)
5	89.83 ± 3.86	90.43 ± 2.57	88.63 ± 2.32	66.36 ± 1.79
50	100.1 ± 6.97	91.19 ± 7.33	87.75 ± 1.44	59.40 ± 0.68
500	96.43 ± 8.44	83.43 ± 8.81	88.69 ± 3.41	67.27 ± 1.42

^aAutosampler stability: the sample was placed in an autosampler at 10 °C for 6 h.

^bShort-term stability: the sample was placed in plasma at 4 °C for 6 h.

^cLong-term stability: the sample was placed in plasma at −20 °C for 2 weeks.

^dFreeze–thaw stability: the sample was placed in plasma at −20 °C for 12 h and then at room temperature for 12 h, and this cycle was repeated three times.

^eFormulation = (peak area of processed sample/peak area of freshly prepared sample) × 100.