Sample concentration
(ng mL-1) (n = 6)
Concentration found
(mean ± S.D.) (ng mL-1)
% CV
Short-term stability (1, 2, 3 h)    
0.74 0.726 ± 0.1815 2.51
37.3 37.138 ± 1.0128 2.72
75.06 75.290 ± 2.4069 3.19
Long-term stability (4 weeks)    
0.74 0.70 ± 0.0220 3.14
37.3 38.004 ± 1.9729 5.19
75.06 75.408 ± 4.8898 6.48
Stock Solution Stability (7, 14,21Days)    
0.74 0.762 ± 0.0205 2.69
37.3 38.416 ± 1.5277 3.97
75.06 75.420 ± 1.0334 1.37
Freeze thaw Stability (3 Cycle)    
0.74 0.718 ± 0.0136 1.89
37.3 37.446 ± 1.0011 2.67
75.06 75.292 ± 2.9094 3.86
Table 2: Stability of plasma samples of TMS.