Anyone found guilty of a felony–either after trial or through a plea admission–must submit a sample of his DNA to law enforcement. See M.G.L. c. 22E, Section 3.
Guilty defendants sentenced to prison or jail must give their DNA samples to correctional officers within ten days of incarceration.
If the defendant does not receive a direct sentence, he must give his DNA sample to the court’s probation department immediately.
The DNA samples will be sent to the Massachusetts State Police. The state police will keep a record of the defendant’s DNA and make it available to other law enforcement agencies
for identification purposes in order to further official criminal investigations or prosecutions.
M.G.L. c. 22E, Section 10
Refusal to submit a DNA sample is deemed a probation violation. Additionally, incarcerated defendants will not be released unless/until they provide their DNA as required.