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Note: While our most popular guides have been translated into Spanish, some guides are only available in English.

Tips for providing your sample

If providing adequate sample volume is a challenge for you or someone you are assisting, the following may help increase saliva production:

  • Gently rubbing the outside of your cheeks
  • Making chewing motions with your mouth
  • Smelling or imagining sour foods such as lemons
  • Thinking about your favorite food

Biting or scraping your cheeks is not recommended as it may change the quality of your sample.