Bitti remained absconding by jumping bail following his conviction for raping of a German woman at Alwar in Jaipur.
Additional Sessions Judge K V Jayakumar issued the order today on Kerala Police's plea seeking permission of the test to obtain scientific proof for establishing Bitti's identity, who had been impersonating here as Raghav Rajan.
Earlier, a magistrate court at Payannur in the district had rejected the police plea for DNA test.
Bitti was charged with impersonation, cheating and forgery.
After his arrest, a police team was sent to Odisha to question Bitti's father and he had subsequently identified his son through photographs shown to him.
After jumping bail, Bitti had spent few months in Puttaparthi, where he had enrolled as student in a private institution in Kannur allegedly using forged documents, before obtaining a bank job.