The CG said the human remains had been handed over to Tamil Nadu Forensic Laboratory for a DNA test and blood samples of the kin of the three deceased personnel were obtained matching the identity.
The lab has confirmed that the recovered remains belong to the crew members, it added.
"The remains belong to Commandant Subhash Suresh, Deputy Commandant Vidyasagar and Deputy Commandant D Sai M K Soni. The bereaved family members have been intimated about the confirmation of the DNA test," it said in a release.
After a month long search, the Coast Guard recovered the wreckage along with some human remains in July. The search operation was officially called off last month.