Recovery level Desogestrel With Placebo
Amount added (mcg / ppm) Amount recovered (mcg / ppm) % Recovery Average recovery % RSD
70% 0.4168 0.4220 101.2 101.3 0.3
0.4168 0.4235 101.6
0.4168 0.4208 101.0
100% 0.5954 0.6041 101.5 100.8 0.6
0.5954 0.6002 100.8
0.5954 0.5963 100.2
130% 0.7740 0.7718 99.7 99.7 0.1
0.7740 0.7719 99.7
0.7740 0.7728 99.8
                                                                              Overall 100.6 0.33
Table 8: Recovery data for desogestrel.