How To Collect Your Sample
When you are collecting your saliva sample, you need to collect it all within a time frame of 30 minutes. You need to funnel the contents into the tube straight away. It prevents the DNA from degrading over the waiting period.
If you wait longer than 30 minutes or delay releasing the buffer solution, your quality of the DNA could be compromised. Some people, however, have a condition in which their mouth is naturally dry or are on medication with this side effect.