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Beckman Coulter s FC 500 CXP Flow Cytometry and Guava Technologies ViaCount


Beckman Coulter said on June 9 that it has begun shipping its new FC 500 CXP Flow Cytometry system.

The system is based on its predecessor, the FC 500, but is optimized for clinical diagnostics as well, Beckman said.

Features of the new flow cytometer include automated quality control for improving intra- and inter-laboratory quality assurance, and a multi-application standardization program designed to save laboratory time, the company said. In addition, Beckman said, laboratories can now apply the review of Levy Jennings charts, reagent lot tracking, and operator traceability to their clinical flow cytometry operations.

Beckman said the system also offers the tetraCXP application, an automated method for assessing and analyzing CD4 cells for HIV disease progression monitoring.

Guava Technologies has released a new application note regarding the use of its ViaCount assay to count white blood cells in unlysed, whole human blood, the company said last week.

The application note, according to an official company statement, describes how the ViaCount assay overcomes limitations imposed by debris from lysed red blood cells that obscures the cytometer field of view. The assay stains and counts only the nucleated white blood cells in numbers to be statistically reproducible, Guava said.

Guava said the ViaCount assay accomplishes this using a combination of dyes that specifically bind to DNA depending on the state of the cell. In addition, the company said that unbound dye does not produce a fluorescent signal, further improving assay resolution.

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