TABLE 2.

Effect of lyophilization on the stability of rQβ

Time (days)Storage temp (°C)OD value for CIC-HCV RT-PCR assaya (OD value of 10−6 dilution)
Postlyophilization
    5370.436 (2.187)
    5250.050 (2.187)
    541.521 (2.187)
Postreconstitution
    1240.843 (1.157)
    3540.879 (0.920)
    8241.389 (1.276)
    12542.626 (2.729)
  • a Results are expressed as OD values after colorimetric detection with the VQB02 probe. All experiments showed cutoff values of <0.250. The OD of the 10−6 dilution of the rQβ stock solution tested as a reference is shown in parentheses.