Which instrument is described with +fluorescent Polarization as an enhancement?

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Fluorescent polarization is a readout used in homogeneous immunoassays: a fluorescently labeled tracer is used, and when it binds to a larger molecule the rotation slows, increasing the polarization of emitted light. This allows rapid, wash-free measurements and is especially useful for small-molecule or drug-type immunoassays.

An enhancement described as + fluorescent polarization means the instrument offers FP as an added capability to boost assay performance on certain tests. Among common clinical chemistry platforms, the Integra line is the one marketed with this FP enhancement option, making it the instrument described with + fluorescent polarization.

The other systems are typically associated with different primary detection methods (such as chemiluminescence or nephelometry) and do not advertise FP enhancement in their standard configurations, so they don’t fit the description as closely.