Cell Culture Quality Control & Authentication

Protect the integrity of your cell-based research with rigorous QC testing for contamination, authentication, viability, and reproducibility

Why Cell Culture Quality Control Matters

Even well-managed laboratories can encounter:

  • Mycoplasma contamination
  • Cell line misidentification
  • Cross-contamination
  • Reduced viability after freeze/thaw
  • Undetected microbial contamination

These issues can compromise assay performance, delay timelines, waste valuable samples, and produce unreliable data. ABS Bio helps biopharma teams reduce these risks through comprehensive cell culture quality control procedures integrated into every project.

Related Resources

Cell Culture Quality Control Services Overview

Reproducible cell-based experiments require stringent quality control procedures. A quality-focused mindset, systems, and procedures have driven everything we do at ABS Bio since our beginnings in 1990.

Services available in our quality control and quarantine facilities include:

Cell line authentication

Many journals now mandate cell line authentication because of the ramifications of cell line misidentification and contamination. With your cell, tissue, or DNA sample, we can detect contaminations in as few as 10 genomes and provide you with detailed data identifying your human cell line or tissue. Our team analyzes minute quantities of DNA, generates a cell line barcode unique to your sample(s), and checks the barcode against a database of known cell lines.

Mycoplasma Testing

Our highly sensitive and specific PCR-based method tests your cells or media samples for multiple strains of mycoplasma. This method includes an internal PCR control to lend increased confidence in the results. We use an Agilent 5200 Fragment Analyzer for the analysis of amplified PCR fragments from any mycoplasma present, resulting in precise, fast, and cost-effective mycoplasma testing.

  • PCR-based detection
  • High sensitivity
  • Pre- and post-banking testing

Sterility and Viral Testing

We routinely test all cells that we receive and ship for bacteria and mold. We also can perform viral and pathogen testing of tissue samples. Available methods for performing viral testing of cell cultures include mouse, rat, and human viral panels using PCR-based methods.

Interspecies Testing

When authentication is not an option, we use sensitive PCR-based testing to verify purity of your bank, assessing the possible presence of human, mouse, hamster, and rat cells in a bank.

Viability

All cell banks are checked pre- and post-thaw:

  • Pre-freeze viability
  • Post-thaw viability
  • Batch consistency

Mycoplasma, viability, and sterility testing are included with all cell banking orders. We will make sure that each product meets our high standards before sending it to your research lab.

Improve Experimental Reproducibility

Cell culture variability can lead to inconsistent assay performance, failed validation studies, and costly rework.

ABS Bio’s QC procedures help ensure:

  • Consistent cell performance
  • Reliable assay behavior
  • Reduced variability between banks
  • Greater confidence in downstream results

Key Cell Culture Quality Control Terminology

Cell Culture Quality Control (QC)

Cell culture quality control (QC) encompasses the testing procedures used to verify the identity, purity, viability, and integrity of cultured cells. Quality control helps ensure reliable, reproducible research results and reduces the risk of contamination or misidentification.

Cell Authentication

Cell authentication is the process of confirming a cell line’s identity to ensure it matches its documented origin. Authentication helps prevent the use of misidentified or cross-contaminated cell lines in research studies.

STR Profiling

Short Tandem Repeat (STR) profiling is a genetic testing method used to authenticate human cell lines. STR analysis compares specific DNA markers to reference profiles to confirm cell identity and detect cross-contamination.

Mycoplasma Testing

Mycoplasma testing detects contamination by mycoplasma organisms, which can alter cell growth, gene expression, metabolism, and experimental outcomes. Routine mycoplasma screening is considered a critical component of cell culture quality assurance.

Sterility Testing

Sterility testing evaluates cultured cells for bacterial, fungal, and other microbial contamination. Sterility verification helps ensure samples are suitable for downstream research applications.

Cell Viability

Cell viability refers to the percentage of living, functional cells within a sample. Viability assessments are commonly performed following culture, cryopreservation, thawing, or transport procedures.

Cell Characterization

Cell characterization involves evaluating cellular properties such as morphology, phenotype, marker expression, growth characteristics, and functionality to verify sample quality and suitability for research.

Cell Line Authentication

Cell line authentication is the verification of a cell line’s identity using genetic or phenotypic testing methods. Authentication helps improve research reproducibility and confidence in experimental results.

Cross-Contamination

Cross-contamination occurs when unintended cells are introduced into a culture, potentially altering experimental results. Quality control testing helps identify and prevent cross-contaminated cell populations.

Cell Purity

Cell purity describes the proportion of the desired cell population within a sample. Purity assessments are particularly important when working with isolated primary cells or sorted cell populations.

Cell Banking

Cell banking is the process of preserving and storing authenticated cell populations for future use. Quality control testing is commonly performed before and after banking to confirm sample integrity.

Cryopreservation

Cryopreservation is the storage of cells at ultra-low temperatures to maintain viability and functionality over time. Post-thaw quality testing is often performed to assess recovery and sample quality.

Cell Culture Contamination

Cell culture contamination refers to the presence of unwanted microorganisms, cells, or substances within a culture system. Common contaminants include bacteria, fungi, yeast, mycoplasma, and cross-contaminating cell lines.

Research Reproducibility

Research reproducibility is the ability to obtain consistent experimental results when studies are repeated. Robust cell culture quality control practices help improve reproducibility by ensuring sample identity and integrity.