I had this damper on an engine several years ago or my Fluidampr/ Streetdampr has been sitting on the shelf while I have been finishing my engine. Will the part need inspection or testing?

No. The inertia ring is always freely floating inside the housing. The silicone fluid is guaranteed to last forever. As long as the damper was never physically abused (hit with a hammer), installed properly with an installer tool or a bolt and washer, and as long as the damper maintains a tight press fit on the crankshaft, there is nothing that can go wrong with the damper. It is important to check for corrosion or pitting on the seal surface of the damper, before installation. The seal surface should be smooth and free from rust and corrosion. As with most any performance part, if it is physically damaged from an accident or a fire, the damper should be replaced.