Abstract: A device (101) for determining the presence, absence, concentration, or count of rare cell or cell-like objects in a turbid fluid consisting of a light source (103) for illuminating a chamber (123) containing a solution including complexes of suspended cells or cell-like moieties (261) and an optically-active agent, and further including an imaging detector (145) and an output (147) for providing a determined or displayed result. Methods of enumeration are also disclosed.