Releasing The Buffer
Instead of putting their saliva in first and then releasing the buffer, they will do it the other way around. The buffer will first be released into the tube and then topped up with saliva.
If you are unlucky enough to spill the buffer liquid, you will need to request a new kit from the company. In total, you need to be able to produce a one-half teaspoon of saliva. It is estimated that it took an adult between 5-10 minutes to produce this amount.