Table 4: Stability of TBM.

Conditions% remainedRSD (%)n

In autosampler vial, 21–25°C, 3 days
300 ng/mL1073.53
20000 ng/mL1052.43
In M9, 21–25°C, 5 days
300 ng/mL1048.13
20000 ng/mL99.23.63
3 freeze-thaw cycles
300 ng/mL99.45.03
20000 ng/mL99.82.43
In M9 medium, 6 days, −70°C
300 ng/mL93.83.33
20000 ng/mL1013.03
IS (5000 ng/mL) in water102.90.743
24 hr, 21–25°C74.23.43
5 days, 21–25°C79.51.74