High Rheumatoid Factor Solution (Purified). 8 different clones are available.

High Rheumatoid Factor Solution (Purified) is a biotechnology-grade reagent designed for precision interference testing and assay validation in immunodiagnostics. This solution contains purified rheumatoid factor (RF) at defined concentrations, ranging from 500 IU/mL to over 25,000 IU/mL, across eight distinct clones. Each clone offers a unique titer range, enabling researchers to simulate a wide spectrum of clinical conditions associated with autoimmune diseases, particularly rheumatoid arthritis.

Rheumatoid factor is a well-known source of assay interference, especially in immunoassays targeting IgG, cytokines, or cardiac biomarkers. This purified solution allows for controlled spiking into serum or plasma matrices to evaluate assay robustness, specificity, and cross-reactivity. It is ideal for developers of ELISA, CLIA, and nephelometric platforms seeking to meet regulatory standards for interference testing. Filtered through 0.22 µm membranes and supplied in 1 mL aliquots, the solution is stored at –20°C to preserve stability and activity. Whether you're validating a new diagnostic kit or troubleshooting unexpected signal drift, this reagent provides the consistency and flexibility needed for rigorous assay development.

Key benefits:

• Purified RF solution available in eight defined titer ranges

• Supports interference testing and assay validation workflows

• Compatible with ELISA, CLIA, and nephelometric platforms

• Filtered and biotechnology-grade for reproducible results

• Supplied in 1 mL aliquots and stored at –20°C

Products are for in vitro research use only (RUO).

References

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