FAQ: My colorimetric LAMP SARS-CoV-2 Positive Control failed to turn yellow following incubation at 65°C. What happened?

The positive control reaction should always turn yellow following incubation at 65°C. Failure to change color indicates a reaction setup error. Repeat assay setup. If this continues to happen, please reach out to NEB Tech Support at [email protected] or through your local NEB contact.