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C3d Protein

For Research Use Only. Not for use in diagnostic procedures.

The complement pathway generates a C3 convertase, a serine protease that cleaves the central complement protein C3, and generates the major cleavage fragment C3b. C3b is an opsonin and also a required protein to create the main convertases that drives the complement cascade. In the presence of complement regulatory molecules C3b may be further degraded sequentially to iC3b, C3c, C3dg and C3d. C3d is an opsonin and deposits on the surface of cells targeted by the complement system.

All Quidel complement components are tested for functional activity in a standard lytic or applicable functional assay and for biochemical purity by SDS-polyacrylamide gel electrophoresis. Please refer to the Certificate of Analysis for lot specific information on functional titer.

Quidel's purified human complement components are useful in a wide variety of immunochemical and research applications. For assistance with a specific protocol, please contact Quidel Technical Support.

Features & Benefits


Product Specifications

Product Spec NameProduct Spec Data

100 µg/vial


0.10 mL


At or below –70°C


> 85%



Ordering Information

Catalog NumberKit Size / Case Size
0.10 mL

Product Documentation

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