NetBio, a Waltham company that created a system promising to provide a full DNA fingerprint profile in only 90 minutes, has received FBI approval, giving the system the go-ahead to be used in accredited DNA labs.

This is the FBI’s first approval of such a system. It is unclear to what extent FBI labs will use the NetBio technology. But by allowing crime laboratories to obtain a full DNA profile in less than two hours, the approval could mean a breakthrough in the field of forensic analysis, said Richard Selden, chief executive of NetBio.

The test kit, dubbed DNAscan, is about the size of a large microwave oven and can read a DNA sample taken via cheek swab. Once a profile is generated, it can be compared with profiles listed in national and state crime databases, helping to determine whether a person is connected to other crimes.