SPA Reagents and Technologies

Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes including use with enzyme and receptor targets, radioimmunoassay and molecular interactions. The assay format requires no separation steps, is amenable to automation, and is supported by more than 10 years of application data.

SPAs using either SPA scintillation beads or SPA imaging beads can be read on scintillation counters and CCD imagers respectively. In addition, SPA reagents are suitable for the detection of a range of isotopes including 3H, 125I, 33P and 14C, when used as radiolabels.

For biochemical assays such as receptor binding or enzyme activity, scintillation proximity assay offers a more convenient cost-effective and safer technology for a range of applications.

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SPA Enzyme Kits

SPA kits are also available for a wide range of target enzymes involved in the mechanisms of signal...  View more


SPA - Receptor Binding Assays SPA - Protein Kinase Assays SPA - Enzymatic Assays SPA - General ...  View more


SPA G Protein-Coupled Receptor (GPCR) Assays are designed to reduce assay development time and deliver...  View more

SPA Imaging Beads

SPA Imaging beads are microspheres containing scintillant which emit light in the red region of the ...  View more

SPA Scintillation Beads

SPA Scintillation beads are microspheres containing scintillant which emit light in the blue region...  View more