Your saliva tube(/s) should be filled until the 4ml line (roughly 75% full).
Make sure your mouth is clean before providing the sample. If you collected your sample after eating, please rinse out the tubes + your mouth with water. Then collect the samples again.
Are you having trouble collecting your sample? Here are a couple of tips and tricks to speed up the saliva collection process + generate more saliva.
Make sure you're very hydrated. Drinking 4-6 glasses of water within 20 minutes of taking your test is advised.
Smelling vinegar before and during your collection helps generate saliva. Your mouth may become watery, so be sure to slowly release the saliva to avoid a buildup of bubbles.
You also do not need to collect your samples on the same day. Many Base members find it easiest to start with their night collection!