My items say to store at -20°c but they were shipped in an envelope. Is it ok to use?

Yes, it is safe to use these items. Since 2003, CST has been shipping antibodies at room temperature when possible to reduce waste from packing materials. All CST antibodies are stability tested by exposure to room temperature and 37°C for one week, followed by western blot testing to ensure there is no change in antibody performance.

If you received an antibody at room temperature, rest assured that it has passed stability testing and that the antibody performance is still optimal. Upon receipt, please store the antibody as indicated on the product datasheet.

Last updated: September 12, 2024