The Scientific Services Branch is comprised of the Biology Section, Chemistry Section, Pattern Evidence Section, and Trace Evidence Section and is managed by the Deputy Director.

Biology Section:

The Biology Section is made up of the Casework, Database, and Technical Units.

Chemistry Section:

The Chemistry Section is made up of the Toxicology and CDS Units. CDS is divided into 3 Labs one at the Pikesville Laboratory, one in Berlin at the MDSP barrack, and one in Hagerstown at the MDSP barrack.

Pattern Evidence Section:

The Pattern Evidence Section is made up of the Latent Prints/Impressions Unit and the Firearms/Toolmarks Unit.

Trace Evidence Section:

The Trace Evidence Section is made up of the Trace Evidence Unit and the Questioned Documents Unit.