| Analyte |
Spiked conc. |
In bulk |
In serum |
| (µg mL-1) |
% Rec. |
% RSD |
% Rec. |
% RSD |
|
Prazosin |
8 |
100.08 |
0.009 |
100.04 |
0.004 |
| 10 |
99.93 |
0.004 |
99.97 |
0.002 |
| 12 |
100.65 |
0.001 |
100.07 |
0.008 |
|
Amlodipine |
32 |
100.21 |
0.008 |
100 |
0.018 |
| 40 |
100.09 |
0.085 |
100.03 |
0.008 |
| 48 |
99.55 |
0.002 |
99.98 |
0.001 |
|
Diltiazem |
16 |
100.17 |
0.007 |
100.06 |
0.011 |
| 20 |
100.09 |
0.005 |
99.96 |
0.005 |
| 24 |
100.1 |
0.001 |
100.03 |
0.002 |
|
Verapamil |
48 |
100.05 |
0.002 |
100.05 |
0.004 |
| 60 |
99.94 |
0.003 |
99.92 |
0.004 |
| 72 |
99.98 |
0.054 |
100.09 |
0.017 |
|