How long should biological evidence be retained?

Biological evidence must be retained in accordance with Title 22 OS 1372.A.  "A criminal justice agency having...custody of biological evidence from a violent felony offense...shall retain and preserve that biological evidence for such a period of time as any individual convicted of that crime remains incarcerated."  Title 74 OS 150.28b.D “A collected sexual assault evidence kit, whether tested or untested, must be retained in a secure, environmentally safe manner for not less than fifty (50) years or for the length of the statute of limitations for the alleged crime, whichever is longer.”