Assemblies are provided for collecting a sample from a mouth using an integrated sample collection tip. A sample collection assembly includes a sample collection body configured for being placed within the mouth, wherein the sample collection body includes a bore and one or more pores. The sample collection assembly further includes a conduit that disposed within the bore of the sample collection body and that is in fluid communication with the one or more pores. The conduit is bonded within the bore. The sample collection assembly can further include a hand piece that has a tip on which the sample collection body is mounted, and through which the conduit can extend. The pores can include a plurality of micropores. The sample collection body can be hydrophobic, and a hydrophilic surfactant can be disposed on the outer surface of the sample collection body.