Previous Method Proposed Method
FLX N-FLX FLX N-FLX  
Retention times 7.7 3.4 4.24 2.49
% Recovery (n = 6) 86-88 92-93 98-102 98-102
Tailing factor - - 1.275 1.275
Resolution Poorer Poorer 6.625 8.161
% Accuracy (n = 6) 97-100 98-100 98-100 98-100
(%) C.V. inter-day
(n = 6)
7.56 5.7 0.90 1.41
(%)C.V. intra-assay (n = 6) 2.66 2.16 0.97 1.02
Table 4: The data of fluoxetine and norfluoxetine in presence of plasma by the previous method and proposed method.
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