There are three common consultants hired to run a construction project: Project Managers (PM), Construction Managers (CM), and General Contractors (GC). The differences between these job descriptions are distinct, but they are often and easily confused.
There are many, many types of labs, unique to all different use cases. Some labs are extremely regulated and have very strict controls in place. At the very simplest level though, there are wet labs and dry labs.
GSA stands for the General Services Administration. The GSA is an independent government agency which manages federal property, including operating and maintaining buildings, supplies and transportation acquisition and communications management.