Abstract: The invention provides analyzers that improve tests for detecting specific cellular, viral, and molecular targets in clinical, industrial, or environmental samples. The invention permits efficient and specific selection and sensitive imaging detection of individual microscopic targets at low magnification. Automated embodiments allow efficient walk-away, on-demand, random-access high-throughput testing. The analyzers perform tests without requiring wash steps thus streamlining engineering and lowering costs. Thus, the invention provides analyzers that can deliver rapid, accurate, and quantitative, easy-to-use, and cost-effective tests for analytes.