Combined chemiluminescence and elisa automated sample reader

A combined chemiluminescence and ELISA automated sample reader, comprising in combination:

• a reader body having an upper housing and a lower housing spaced apart by a slot;
• a microtiter plate sized to fit within said slot, said microtiter plate having a plurality of wells on an upper surface thereof;
• at least one light source supported by said reader body, said light source coupled to a power supply and oriented to shine light across said slot;
• at least one light detector on a side of said slot opposite said light source;
• said microtiter plate and said reader body movable relative to each other to align a plurality of said wells individually along a path between said light source and said light detector;
• and
• at least one of said upper housing and said lower housing having a photon counter oriented to detect photons at a read point of said reader body, when photons are emitted from a sample located in one of said wells of said microtiter plate.