Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
certify [ˈsəːtɪfaɪ] vt (fact) удостоверя́ть (удостове́рить perf) (after studies) выдава́ть*(вы́дать*perf) дипло́м +dat ; (also: certify insane)признава́ть*(призна́ть*perf) душевнобольны́м[-ой]
he is a certified lawyer он дипломи́рованный юри́ст
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.