Method and assembly for separating formed constituents from a liquid constituent in a complex biologic fluid sample

Abstract From the Canadian patent

Formed constituents in an aqueous based fluid biologic material sample are separated from the aqueous constituent of the sample and are concentrated in an examining instrument's focal plane where they can be examined under magnification. Examples of fluids that can be analyzed in this fashion include urine; cerebrospinal fluid; pleural fluid; ascites; fluids aspirated from cysts such as thyroid and breast cysts; cytologic specimens which have been placed in an aqueous fluid; platelet-rich plasma; and the like. The sample is placed in a chamber having a layer of a hydrophilic hydrogel covering a surface of the chamber. An opposite surface of the chamber is transparent and may be formed by a …