Sample Management in Modern Laboratories: From Collection to Storage-Industry news-Suzhou Welfullbio technology Co., LTD

Sample management is an essential part of modern laboratory research. From the initial collection of biological materials to their processing, identification, and long-term storage, each step can influence how effectively samples are preserved and used in subsequent experiments.

As research in molecular biology, genomics, drug discovery, and clinical studies continues to develop, laboratories are handling increasingly diverse types of biological samples. Maintaining clear sample identification, appropriate storage conditions, and reliable records has therefore become an important part of laboratory operations.

Recent developments in biobanking standards also reflect this growing attention to sample storage. In December 2025, the International Organization for Standardization (ISO) published ISO 20070:2025, which specifies requirements for primary containers used to store biological materials in biobanks. The standard addresses factors including intended use, storage conditions, documentation, and quality control.

1. Sample Collection: Establishing the Foundation

Sample management begins with appropriate collection procedures. Depending on the research application, samples may include blood, tissue, cells, nucleic acids, microorganisms, or other biological materials.

The collection process should follow protocols appropriate to the sample type and intended analysis. Factors such as collection timing, handling procedures, contamination risks, and the choice of container can influence the condition of a sample before it reaches the next stage of processing.

Selecting a suitable container is particularly important. The material, capacity, closure design, and compatibility with the sample should be considered according to the intended application.

Clear procedures at this stage help laboratories establish a reliable starting point for subsequent sample processing and analysis.

2. Sample Processing and Aliquoting

After collection, samples may require separation, centrifugation, dilution, or aliquoting before analysis or storage.

Aliquoting involves dividing a sample into smaller portions for different experiments or future use. This approach can help laboratories manage sample volumes and reduce repeated handling of the same material.

However, aliquoting procedures should be designed carefully. Repeated opening, transfers, and freeze-thaw cycles may affect certain biological materials, depending on their characteristics and storage conditions.

Laboratories should therefore determine suitable aliquot volumes, container formats, and handling procedures based on the specific sample and experimental requirements.

Centrifuge tubes, microcentrifuge tubes, and other laboratory containers can serve different roles during these processes. Their suitability depends on factors such as working volume, chemical compatibility, centrifugation requirements, and the intended downstream application.

3. Sample Identification and Traceability

Accurate identification is another fundamental element of sample management.

In laboratories handling large numbers of samples, incomplete labels or inconsistent records can make it difficult to determine a sample's origin, processing history, or storage location. Such problems may lead to delays, unnecessary repeat work, or uncertainty when interpreting experimental results.

Common practices include assigning unique sample identifiers, recording collection and processing information, documenting storage locations, and maintaining consistent naming conventions.

Some laboratories use barcode-based systems and laboratory information management systems (LIMS) to support sample tracking. These tools can help connect physical samples with digital records and make retrieval more efficient.

Regardless of the system used, the objective remains the same: ensuring that each sample can be identified and its relevant history accessed when needed.

4. Storage Conditions and Container Selection

Once samples have been processed and identified, they must be stored under conditions appropriate to their intended use.

Different biological materials have different storage requirements. Some can be maintained under refrigerated conditions, while others require frozen or cryogenic storage. Temperature selection, storage duration, container compatibility, and the number of expected freeze-thaw cycles may all influence sample preservation.

Container selection should therefore be based on the intended application rather than capacity alone.

For example, microcentrifuge tubes may be suitable for small-volume samples used in molecular biology workflows, while cryovials are designed for applications requiring appropriate low-temperature storage. Cryoboxes and other storage racks can help organize containers and support systematic sample retrieval.

For biobanks, the newly published ISO 20070:2025 standard provides a relevant reference for evaluating primary containers used to store biological materials. It emphasizes that suitability must be considered in relation to the biological material, storage conditions, and intended use.

Laboratories should consult applicable product specifications and validated procedures to determine whether a particular container is appropriate for their storage requirements.

5. Building a More Consistent Sample Management Workflow

Effective sample management requires coordination across collection, processing, identification, storage, and retrieval. A weakness at any stage can affect the usefulness of the entire workflow.

Laboratories can improve their procedures by reviewing several practical areas:

Standardized procedures: Establish clear protocols for sample handling, labeling, transfer, and storage.
Appropriate containers: Match container specifications to sample characteristics, working volumes, and storage conditions.
Reliable records: Maintain accurate information about sample identity, processing history, and storage location.
Controlled handling: Minimize unnecessary transfers and follow procedures appropriate to the sample type.
Regular review: Evaluate whether current storage arrangements and tracking practices continue to meet research needs.

These practices are relevant not only to large biobanks but also to university laboratories, biotechnology companies, diagnostic laboratories, and pharmaceutical research teams.

Looking Ahead

As biological research expands across genomics, drug discovery, diagnostics, and advanced therapies, sample management will remain an important foundation for laboratory work.

The publication of ISO 20070:2025 highlights the importance of considering primary storage containers in the broader context of biological sample preservation. At the same time, effective sample management depends on more than containers alone. Appropriate procedures, accurate identification, suitable storage conditions, and reliable documentation must work together.