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Cell Culture Contamination Control

Cell Culture Contamination Control: New Guideline EP 2.6.7

High quality but affordable diagnostic kits for the detection of microbial contaminants in cell cultures, biopharmaceutical products, clinical samples and water. Utilising the sensitivity of PCR and real-time PCR techniques and continued development activities guarantees high quality contamination control.

Important Information:

Changes to the European Pharmacopoeia 2.6.7 - – Mycoplasma Testing

 

Featured in this article:

1) New Requirements for EP 2.6.7 Users
2) What Does This Mean for Your Laboratory?
3) Our Solution: EP 2.6.7 Compliant and Validated Products
4) Transition Period & Discontinued Kits
5) Support for Your Transition

New regulatory requirements, validated products, and transition rules for mycoplasma detection in cell cultures, biopharmaceuticals, and ATMPs.

1) New Requirements for EP 2.6.7 Users  

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From April 2026, the revised European Pharmacopoeia (EP) 2.6.7 will become mandatory. Edition 12.2 defines, for the first time, a dedicated framework for nucleic acid amplification techniques (NAT) and specifies requirements for validation.

Key Changes:
  • NAT now has its own regulatory framework and is considered equivalent to culture-based methods.
  • Required limit of detection (LOD) when NAT replaces culture or indicator cell culture: ≤ 10 CFU/mL or < 100 GC/mL.
    • Genomic copies (GC) are introduced as a unit optimized for NAT methods.
  • Both culturable and non-culturable mycoplasmas must be detected.
  • Cells and supernatant should be tested whenever possible, as mycoplasmas may adhere to or reside within cells.
  • Clear requirements for method validation using validated commercial kits in the user’s own product matrix.
  • More detailed specifications for reference materials and standards, including:
    • GC:CFU ratio < 10
    • Improved comparability between NAT and culture methods.
  • Mandatory NAT controls:
    • Internal control to rule out inhibition (ideally added before pretreatment/extraction)
    • External positive control with defined GC or CFU content close to the limit of detection
    • Negative control without target sequence

2) What Does This Mean for Your Laboratory?

These changes affect QC laboratories, biopharmaceutical manufacturers (including ATMP and CGT), and all facilities applying NAT-based mycoplasma detection methods validated under the previous EP 2.6.7.

For You as a User, this Means:
  • Existing methods must be reviewed and revalidated.
  • New products must be validated in accordance with EP 2.6.7 (Edition 12.2).
  • The transition period should be used to plan and conduct product-specific validation activities.

3) Our Solution: EP 2.6.7 Compliant and Validated Products

Minerva Biolabs has revised all relevant products and developed new kits fully aligned with EP 2.6.7 (Edition 12.2).

Your Benefits:
  • No risk from non-compliant kits
  • Reliable detection even in complex matrices
  • Seamless integration into existing workflows
  • Fully documented validation for regulatory and audit purposes

3.1) Future-Proof, Validated RT-PCR Assays

Venor® Mycoplasma qPCR
Products:
Key Updates:
  • Regulatory foundation: Compliant with EP 2.6.7 (Edition 12.2), USP <63>, USP <77> (draft), and JP 18 G3.
  • Detection principle & sensitivity: Reverse transcriptase-based assays detect both DNA and RNA, enhancing analytical sensitivity.
    • Sensitivity per EP: ≤ 10 CFU/mL or < 100 GC/mL
    • Reliable detection even with low copy numbers or partially degraded DNA/RNA
  • Extended specification: Incorporation of TaqMan® probe technology ensures maximum specificity and reproducibility, effectively minimizing cross-reactivity and false positives.
  • Broad detection range: Detects >130 mycoplasma species, including all species listed in the relevant pharmacopoeias (EP 2.6.7, USP <77> draft, JP 18 G3) across mycoplasma, acholeplasma, and spiroplasma species.

3.2) Robust, Precisely Quantified, and Compliant Standards

The new Mycoplasma Standards are fully aligned with EP 2.6.7 (Edition 12.2) and provide a traceable, reproducible, and reliable foundation for validation and quality control of NAT-based detection methods.

  • Regulatory compliance: Fully compliant with EP 2.6.7 (Edition 12.2) and harmonized with USP <77> (draft) and JP 18 G3.
  • EP-compliant production: Cultures harvested during the exponential growth phase; characterized by a GC:CFU ratio < 10, a key quality criterion for reference materials.
  • LOD determination: Designed for limit of detection (LOD) verification and product-specific validation according to the current pharmacopoeia.
  • Non-infectious and safe: Suitable for quality control, in-process control, and use in GMP environments.
  • External positive control: Meets the new EP requirement for regular sensitivity verification of validated NAT methods.
100GC® Mycoplasma Standards
Products:

100GC® Mycoplasma Standards

Key Improvements:
  • New reference unit: 100 GC/mL, equivalent to 10 CFU/mL according to EP 2.6.7.
  • Traceable quantification: Precisely quantified using digital PCR (dPCR); genomic copy number stated in the Certificate of Analysis (CoA).
Products:

10CFU® Mycoplasma Standards

100CFU® Mycoplasma Standards

Key Improvements:
  • Defined GC/CFU ratio: GC:CFU < 10 in line with current pharmacopoeial requirements.
  • Traceable quantification: Determined via dPCR; GC:CFU ratio reported in the CoA.

3.3) Robust and Validated Extraction Systems

Venor® Mycoplasma Extraction Kit

The Venor® Mycoplasma Extraction Kit was validated in combination with the new Venor® Mycoplasma Assays. It provides robust, reproducible, and efficient nucleic acid extraction for mycoplasma detection in biopharmaceuticals, cell cultures, and ATMPs.

Product:

Venor® Mycoplasma Extraction Kit

Key Features:
  • Magnetic bead technology: Ensures high DNA yield and purity – ideal for demanding matrices.
  • Manual or automated use: Compatible with both manual workflows and automated high-throughput systems (e.g., KingFisher™ Flex).
  • Regulatory compliance: Fully EP 2.6.7-validated in combination with the Venor® Mycoplasma Assays.

4) Transition Period & Discontinued Kits

Some legacy products will be phased out, as they no longer meet the new EP requirements.
Minerva Biolabs offers an internal transition period until April 2029, during which these kits remain available for planned validations. (Note: The regulatory compliance deadline is April 2026.)

Products Affected:
  • Venor®GeM Classic
  • Venor®GeM qEP
  • 10CFU™ Sensitivity Standards (previous version)
  • 100CFU™ Sensitivity Standards (previous version)

Stay informed and register for our Notification of Change service.

5) Support for Your Transition

We support you with:

  • Selection of EP-compliant kits
  • Conducting product-specific validation
  • Adaptation of existing validations
  • Documentation for regulatory authorities and auditors

Technical Support:
suppor@cambio.co.uk