The Collaborative International Dictionary of English v.0.48:

Uncertified \Uncertified\
   See certified.

WordNet (r) 3.0 (2006):

uncertified
    adj 1: lacking requisite official documentation or endorsement
           [ant: certified]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "uncertified":
   apocryphal, groundless, inconclusive, indecisive, nonofficial,
   not following, not proved, unascertained, unattested, unauthentic,
   unauthenticated, unauthoritative, unchecked, unconfirmed,
   uncorroborated, undemonstrated, undetermined, unestablished,
   unfixed, unfounded, unofficial, unproved, unproven, unsettled,
   unshown, unsubstantiated, unsupported, unsupported by evidence,
   unsustained, untested, untried, unvalidated, unverified,
   unwarranted, without basis, without grounds