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Residual host cell DNA is a critical quality control parameter in the production of biologics, especially those derived from E. coli expression systems. Excessive levels of host DNA may pose safety risks and compromise product purity. This kit enables rapid and accurate quantification of E. coli DNA using TaqMan probe-based real-time PCR technology. It is suitable for in-process monitoring, final product release testing, and regulatory compliance. The assay offers high sensitivity, low detection limits, and robust reproducibility. Applicable in GMP-compliant laboratories, CROs, and QC departments of pharmaceutical companies. Ensures consistent quality and safety in biologics manufacturing.

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Product Details FAQ Specification Instructions

The E. coli Residual DNA Detection Kit (Fluorescence PCR) is designed based on real-time fluorescence PCR technology and is intended for  the quantitative detection of residual E. coli host cell DNA which are used for production of biopharmaceutical products. This specialized kit features high specificity, excellent sensitivity, and rapid, convenient operation. The kit can be used in combination with Bioer's magnetic bead-based sample pre-processing kit, MagaBio plus Residual DNA Sample Purification Kit (BSC132), for efficient detection of E. coli host cell DNA residues.


Easy to use:

The primer-probe mix is pre-mixed in a single tube—just add the sample and proceed.

High specificity:

No cross-reactivity with unrelated DNA.

Comprehensive monitoring:

Exogenous internal control detection for process monitoring from sample extraction to PCR.

Good stability:

Less susceptible to contaminants in samples.




-25℃~-15℃


Cat# Product Name Packing size
BSB127M1 E.coli Residual DNA Detection Kit (Fluorescence PCR) 50T
BSB127L1 E.coli Residual DNA Detection Kit (Fluorescence PCR) 100T