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How long do I have to send my sample back to the lab? At what temperature should I store it?

Saliva samples from DNA kits, once mixed with the preservative solution,

are stable at room temperature (15°C to 30°C) and last up to 12 months. Unused kits remain stable at room temperature for up to 5 years.  

The saliva collection tube includes a preservative solution that is added to saliva immediately after the collection of your sample. The preservative solution guarantees the intactness of the genetic material, prevents bacterial contamination and ensures the long-term room temperature stability of the saliva sample.  

As you can see, nothing special needs to be done to perfectly preserve tellmeGen DNA kits. However, prolonged exposure to extreme temperatures or outside of the optimal storage range can jeopardize the subsequent performance of the sample in the laboratory.