A question about luminol

[HydroFloric]

So the other day I rolled detective and discovered a item in my office. A bottle of a chemical I have no knowledge of called luminol. It highlights blood that was been cleaned with space cleaner and allows it to be scanned like any other blood. The question is this somehow make able or was it removed and the bottle is a relic from a distant era. If it was removed does anyone know why? This chem seems so useful I don't see why it would be removed.