Saliva samples should be collected 4 to 5 hours apart. The first saliva needs to be collected with in one...

Try rinsing your mouth out with a bit of warm water. You can also try smelling a lemon, or picture...

You should not have caffeine before you collect the urine sample. You may have caffeine before you collect your saliva...

For best results you should collect all saliva samples the same day. However, if you miss a saliva collection, you...