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iC3b Protein

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

iC3b is generated during the activation of the complement system via the classical or alternative pathway. When a convertase enzyme cleaves C3, C3a and C3b are released in parallel. In vivo, the C3b molecule has a very short half life; C3b is rapidly cleaved to iC3b which can serve as a marker for complement activation by the alternative or classical pathway.

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

1.0 mg/mL


0.250 mL


At or below –70°C


> 90%



Ordering Information

Catalog NumberKit Size / Case Size
0.250 mL

Product Documentation

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