Table 4: Results of recovery study of Doxofylline.

Concentration levelStandard: amount added in sample solution in g/mLAmount recovered in g/mL% recovery

80%8079.7299.65
80%8079.6999.62
80%8079.9899.97
100%10099.7899.78
100%10099.6099.60
100%100100.28100.28
120%120119.2599.37
120%120119.9499.95
120%120120.11100.09

Note: sample concentration was used 100  g/mL.