Tag Archives: chain of custody

Arun Apte, CloudLIMS
In the Food Lab

Is Your Food Testing Lab Prepping for an ISO/IEC 17025 Audit?

By Arun Apte
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Arun Apte, CloudLIMS

With the increasing globalization of the food industry, ensuring that products reaching consumers are safe has never been more important. Local, state and federal regulatory agencies are increasing their emphasis on the need for food and beverage laboratories to be accredited to ISO/IEC 17025 compliance. This complicated process can be simplified and streamlined through the adoption of LIMS, making accreditation an achievable goal for all food and beverage laboratories.

With a global marketplace and complex supply chain, the food industry continues to face increasing risks for both unintentional and intentional food contamination or adulteration.1 To mitigate the risk of contaminated products reaching consumers, the International Organization for Standardization (ISO), using a consensus-based approval process, developed the first global laboratory standard in 1999 (ISO/IEC 17025:1999). Since publication, the standard has been updated twice, once in 2005 and most recently in 2017, and provides general requirements for the competence of testing and calibration laboratories.2

In the recent revision, four key updates were identified:

  1. A revision to the scope to include testing, calibration and sampling associated with subsequent calibration and testing performed by a laboratory.3
  2. An emphasis on the results of a process instead of focusing on prescriptive procedures and policies.4
  3. The introduction of the concept of a risk-based approach used in production quality management systems.2
  4. A stronger focus on information technologies/management systems, specifically Laboratory Information Management System (LIMS).4

As modern-day laboratories reduce their reliance on hard copy documents and transition to electronic records, additional emphasis and guidance for ISO 17025 accreditation in food testing labs using LIMS was greatly needed. Food testing laboratories have increased reliance on LIMS to successfully meet the requirements of accreditation. Food and beverage LIMS has evolved to increase a laboratory’s ability to meet all aspects of ISO 17025.

ISO 17025 requirements
Figure 1. A schematic representation of some of the requirements of ISO/IEC 17025:2017 compliance. (Figure courtesy CloudLIMS)

Traceability

Chain of Custody
A key element for ISO 17025 accredited laboratories is the traceability of samples from accession to disposal.5 Sometimes referred to as chain of custody, properly documented traceability allows a laboratory to tell the story of each sample from the time it arrives until the time it is disposed of.

LIMS software allows for seamless tracking of samples by employing unique sample accession numbers through barcoding processes. At each step of sample analysis, a laboratory technician updates data in a LIMS by scanning the sample barcode, establishing time and date signatures for the analysis. During an ISO 17025 audit, this information can be quickly obtained for review by the auditor.

Procurement and Laboratory Supplies
ISO 17025 requires the traceability of all supplies or inventory items from purchase to usage.6 This includes using approved vendors, documentation of receipt, traceability of supply usage to an associated sample, and for certain products, preparation of supply to working conditions within the laboratory. Supply traceability impacts multiple departments and coordinating this process can be overwhelming. A LIMS for food testing labs helps manage laboratory inventory, track usage of inventory items, and automatically alerts laboratory managers to restock inventory once the quantity falls below a threshold level.

A food LIMS can ensure that materials are ordered from approved vendors only, flagging items purchased outside this group. As supplies are inventoried into LIMS, the barcoding process can ensure accurate storage. A LIMS can track the supply through its usage and associate it with specific analytical tests for which inventory items are utilized. As products begin to expire, a LIMS can notify technicians to discard the obsolete products.

One unique advantage of a fully integrated LIMS software is the preparation and traceability of working laboratory standards. A software solution for food labs can assist a technician in preparing standards by determining the concentration of solvents needed based on the input weight from a balance. Once prepared, LIMS prints out a label with barcodes and begins the supply traceability process as previously discussed.

Quality Assurance of Test and Calibration Data

This section of ISO 17025 pertains to the validity of a laboratory’s quality system including demonstrating that appropriate tests were performed, testing was conducted on properly maintained and calibrated equipment by qualified personnel, and with appropriate quality control checks.

Laboratory Personnel Competency
Laboratory personnel are assigned to a specific scope of work based upon qualifications (education, training and experience) and with clearly defined duties.7 This process adds another layer to the validity of data generated during analysis by ensuring only appropriate personnel are performing the testing. However, training within a laboratory can be one of the most difficult components of the accreditation process to capture due to the rapid nature in which laboratories operate.

With a food LIMS, management can ensure employees meet requirements (qualifications, competency) as specified in job descriptions, have up-to-date training records (both onboarding and ongoing), and verify that only qualified, trained individuals are performing certain tests.

Calibration and Maintenance of Equipment
Within the scope of ISO 17025, food testing laboratories must ensure that data obtained from analytical instruments is reliable and valid.5 Facilities must maintain that instruments are in correct operating condition and that calibration data (whether performed daily, weekly, or monthly) is valid. As with laboratory personnel requirements, this element to the standard adds an additional layer of credibility that sample data is precise, accurate, and valid.

A fully integrated software solution for food labs sends a notification when instrument calibration is out of specification or expired and can keep track of both routine internal and external maintenance on instruments, ensuring that instruments are calibrated and maintained regularly. Auditors often ask for instrument maintenance and calibration records upon the initiation of an audit, and LIMS can swiftly provide this information with minimal effort.

Figure 2. A preconfigured food LIMS to manage instrument calibration and maintenance data. (Figure courtesy of CloudLIMS)

Measurement of Uncertainty (UM)
Accredited food testing laboratories must measure and report the uncertainty associated with each test result.8 This is accomplished by using certified reference materials (CRM), or known spiked blanks. UM data is trended using control charts, which can be prepared using labor-intensive manual input or performed automatically using LIMS software. A fully integrated food LIMS can populate control data from the instrument into the control chart and determine if sample data analyzed in that batch can be approved for release.

Valid Test Methods and Results
Accurate test and calibration results can only be obtained with methods that are validated for the intended use.5 Accredited food laboratories should use test methods that are current and contain embedded quality control standards.

A LIMS for food testing labs can ensure correct method selection by technicians by comparing data from the sample accession input with the test method selected for analysis. Specific product identifiers can indicate if methods have been validated. As testing is performed, a LIMS can track time signatures to ensure protocols are properly performed. At the end of the analysis, results of the quality control samples are linked to the test samples to ensure only valid results are available for clients. Instilling checks at each step of the process allows a LIMS to auto-generate Certificates of Analysis (CoA) knowing that the testing was performed accurately.

Data Integrity
The foundation of a laboratory’s reputation is based on its ability to provide reliable and accurate data. ISO 17025:2017 includes specific references to data protection and integrity.10 Laboratories often claim within their quality manuals that they ensure the integrity of their data but provide limited details on how it is accomplished making this a high priority review for auditors. Data integrity is easily captured in laboratories that have fully integrated their instrumentation into LIMS software. Through the integration process, data is automatically populated from analytical instruments into a LIMS. This eliminates unintentional transcription errors or potential intentional data manipulation. A LIMS for food testing labs restricts access to changing or modifying data, allowing only those with high-level access this ability. To control data manipulation even further, changes to data auto-populated in LIMS by integrated instrumentation are tracked with date, time, and user signatures. This allows an auditor to review any changes made to data within LIMS and determine if appropriate documentation was included on why the change was made.

Sampling
ISO 17025:2017 requires all food testing laboratories to have a documented sampling plan for the preparation of test portions prior to analysis. Within the plan, the laboratory must determine if factors are addressed that will ensure the validity of the testing, ensure that the sampling plan is available to the laboratory (or the site where sampling is performed), and identify any preparation or pre-treatment of samples prior to analysis. This can include storage, homogenization (grinding/blending) or chemical treatments.9

As sample information is entered into LIMS, the software can specify the correct sampling method to be performed, indicate appropriate sample storage conditions, restrict the testing to approved personnel and provide electronic signatures for each step.

Monitoring and Maintenance of the Quality System

Organization within a laboratory’s quality system is a key indicator to assessors during the audit process that the facility is prepared to handle the rigors that come with accreditation.10 Assessors are keenly aware of the benefits that a food LIMS provides to operators as a single, well-organized source for quality and technical documents.

Document Control
An ISO 17025 accredited laboratory must demonstrate document control throughout its facility.6 Only approved documents are available for use in the testing facility, and the access to these documents is restricted through quality control. This reduces the risk of document access or modification by unauthorized personnel.

LIMS software efficiently facilitates this process in several ways. A food LIMS can restrict access to controlled documents (both electronic and paper) and require electronic signatures each time approved personnel access, modify or print them. This digital signature provides a chain of custody to the document, ensuring that only approved controlled documents are used during analyses and that these documents are not modified.

Software, LIMS
Figure 3. A software solution for food labs helps manage documents, track their revision history, and ensure document control. (Figure courtesy of CloudLIMS)

Corrective Actions/Non-Conforming Work
A fundamental requirement for quality systems is the documentation of non-conforming work, and subsequent corrective action plans established to reduce their future occurrence.5

A software solution for food labs can automatically maintain electronic records of deviations in testing, flagging them for review by quality departments or management. After a corrective action plan has been established, LIMS software can monitor the effectiveness of the corrective action by identifying similar non-conforming work items.

Conclusion

Food and beverage testing laboratories are increasingly becoming accredited to ISO 17025. With recent changes to ISO 17025, the importance of LIMS for the food and beverage industry has only amplified. A software solution for food labs can integrate all parts of the accreditation process from personnel qualification, equipment calibration and maintenance, to testing and methodologies.11 Fully automated LIMS increases laboratory efficiency, productivity, and is an indispensable tool for achieving and maintaining ISO 17025 accreditation.

References

  1. Spink, J. (2014). Safety of Food and Beverages: Risks of Food Adulteration. Encyclopedia of Food Safety (413-416). Academic Press.
  2. International Organization for Standardization (October 2017). ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories. Retrieved from: https://www.iso.org/files/live/sites/isoorg/files/store/en/PUB100424.pdf
  3. 17025 Store (2018). Transitioning from ISO 17025:2005 to ISO/IEC 17024:2017. Standards Store.
  4. Perry Johnson Laboratory Accreditation (2019). An Overview of Changes Between 17025:2005 and 17025:2017. ISO/IEC 17025:2017 Transition. https://www.pjlabs.com/downloads/17025-Transition-Book.pdf
  5. Analytical Laboratory Accreditation Criteria Committee. (2018). AOAC INTERNATIONAL Guidelines for Laboratories Performing Microbiological and Chemical Analyses of Food, Dietary Supplements, and Pharmaceuticals, An Aid to Interpretation of ISO/IEC 17025. Oxford, England: Oxford University Press.
  6. Cokakli, M. (September 4, 2020). Transitioning to ISO/IEC 17025:2017. New Food Magazine.
  7. ISO/IEC 17025:2017. General requirements for the competence of testing and calibration laboratories.
  8. Bell, S. (1999). A Beginner’s Guide to Uncertainty of Measurement. Measurement Good Practice Guide. 11 (2).
  9. 17025Store (2018). Clause 7: Process requirements. Standards Store.
  10. Dell’Aringa, J. (March 27, 2017). Best Practices for ISO 17025 Accreditation: Preparing for a Food Laboratory Audit (Part I). Food Safety Tech.
  11. Apte, A. (2020). Preparing for an ISO 17025 Audit: What to Expect from a LIMS?
Data protection, security

The Digital Transformation of Global Food Security

By Katie Evans
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Data protection, security

Modern food supply chains are inherently complex, with products typically passing through multiple suppliers and distributors, as well as countries and continents, before they end up on the supermarket shelf. While global supply chains offer consumers greater choice and convenience, they also make protecting the security of food products more challenging. With additional stakeholders between farm and fork, products are exposed to an elevated risk of biological or chemical contamination, as well as food counterfeiting and adulteration challenges—potentially putting consumer health and brand reputation in jeopardy.

Given the importance of maintaining the safety, quality and provenance of food products, global regulatory bodies are placing the integrity of supply chains under increased scrutiny. In the United States, for example, the adoption of FSMA moved the focus from responding to foodborne illnesses to preventing them by prioritizing comprehensive food testing measures, enforcing inspections and checks, and enabling authorities to react appropriately to safety issues through fines, recalls or permit suspensions.1 Similarly, China’s revised Food Safety Law (known as FSL 2015) is widely considered to be the strictest in the country’s history, and seeks to drive up quality standards by empowering regulators, and enhancing traceability and accountability through robust record-keeping. 2 The European Union continues to closely regulate and monitor food safety through its General Food Law, which is independently overseen by the European Food Safety Authority from a scientific perspective.

Achieving the Highest Standards of Food Security, Integrity and Traceability

For producers, manufacturers and distributors, the heightened regulatory focus on the security and integrity of the food supply chain has placed additional emphasis on accurate record-keeping, transparent accountability and end-to-end traceability. To meet the needs of the modern regulatory landscape, food chain stakeholders require robust systems and tools to manage their quality control (QC), environmental monitoring and chain of custody data. Despite this, many businesses still handle this information using paper-based approaches or localized spreadsheets, which can compromise operational efficiency and regulatory compliance.

The fundamental flaw of these traditional data management approaches is their reliance on manual data entry and transcription steps, leaving information vulnerable to human error. To ensure the accuracy of data, some companies implement resource-intensive verification or review checks. However, these steps inevitably extend workflows and delay decision-making, ultimately holding up the release of products at a high cost to businesses. Moreover, as paper and spreadsheet-based data management systems must be updated by hand, they often serve merely as a record of past events and are unable to provide insight into ongoing activities. The time lag associated with recording and accessing supply chain information means that vital insight is typically unavailable until the end of a process, and data cannot be used to optimize operations in real-time.

Furthermore, using traditional data management approaches, gathering information in the event of an audit or food safety incident can be extremely challenging. Trawling through paperwork or requesting information contained in spreadsheets saved on local computers is time-consuming and resource-intensive. When it comes to establishing accountability for actions, these systems are often unable to provide a complete audit trail of events.

Digital Solutions Transform Food Security and Compliance

Given the limitations of traditional workflows, food supply chain stakeholders are increasingly seeking more robust data management solutions that will allow them to drive efficiency, while meeting the latest regulatory expectations. For many businesses, laboratory information management systems (LIMS) are proving to be a highly effective solution for collecting, storing and sharing their QC, environmental monitoring and chain of custody data.

One of the most significant advantages of managing data using LIMS is the way in which they bring together people, instruments, workflows and data in a single integrated system. When it comes to managing the receipt of raw materials, for example, LIMS can improve overall workflow visibility, and help to make processes faster and more efficient. By using barcodes, radiofrequency identification (RFID) tags or near-field communication, samples can be tracked by the system throughout various laboratory and storage locations. With LIMS tracking samples at every stage, ingredients and other materials can be automatically released into production as soon as the QC results have been authorized, streamlining processes and eliminating costly delays.

By storing the standard operating procedures (SOPs) used for raw material testing or QC centrally in a LIMS, worklists, protocols and instrument methods can be automatically downloaded directly to equipment. In this way, LIMS are able to eliminate time-consuming data entry steps, reducing the potential for human error and improving data integrity. When integrated with laboratory execution systems (LES), these solutions can even guide operators step-by-step through procedures, ensuring SOPs are executed consistently, and in a regulatory compliant manner. Not only can these integrated solutions improve the reliability and consistency of data by making sure tests are performed in a standardized way across multiple sites and testing teams, they can also boost operational efficiency by simplifying set-up procedures and accelerating the delivery of results. What’s more, because LIMS can provide a detailed audit trail of all user interactions within the system, this centralized approach to data management is a robust way of ensuring full traceability and accountability.

This high level of operational efficiency and usability also extends to the way in which data is processed, analyzed and reported. LIMS platforms can support multi-level parameter review and can rapidly perform calculations and check results against specifications for relevant customers. In this way, LIMS can ensure pathogens, pesticides and veterinary drug residues are within specifications for specific markets. With all data stored centrally, certificates of analysis can be automatically delivered to enterprise resource planning (ERP) software or process information management systems (PIMS) to facilitate rapid decision-making and batch release. Furthermore, the sophisticated data analysis tools built into the most advanced LIMS software enable users to monitor the way in which instruments are used and how they are performing, helping businesses to manage their assets more efficiently. Using predictive algorithms to warn users when principal QC instruments are showing early signs of deterioration, the latest LIMS can help companies take preventative action before small issues turn into much bigger problems. As a result, these powerful tools can help to reduce unplanned maintenance, keep supply chains moving, and better maintain the quality and integrity of goods.

While LIMS are very effective at building more resilient supply chains and preventing food security issues, they also make responding to potential threats much faster, easier and more efficient. With real-time access to QC, environmental monitoring and chain of custody data, food contamination or adulteration issues can be detected early, triggering the prompt isolation of affected batches before they are released. And in the event of a recall or audit, batch traceability in modern LIMS enables the rapid retrieval of relevant results and metadata associated with suspect products through all stages of production. This allows the determination of affected batches and swift action to be taken, which can be instrumental in protecting consumer safety as well as brand value.

Using LIMS to Protect Security and Integrity of the Food Supply Chain

Increasingly, LIMS are helping businesses transform food security by bringing people, instruments and workflows into a single integrated system. By simplifying and automating processes, providing end-to-end visibility across the food supply chain, and protecting the integrity of data at every stage, these robust digital solutions are not only helping food supply chain stakeholders to ensure full compliance with the latest regulations; they are enabling businesses to operate more efficiently, too.

References

  1. FDA. (2011). FDA Food Safety Modernization Act. Accessed October 3, 2019. Retrieved from https://www.fda.gov/food/food-safety-modernization-act-fsma/full-text-food-safety-modernization-act-fsma.
  2. Balzano, J. (2015). “Revised Food Safety Law In China Signals Many Changes And Some Surprises”. Forbes. Accessed October 3, 2019. Retrieved from https://www.forbes.com/sites/johnbalzano/2015/05/03/revised-food-safety-law-in-china-signals-many-changes-and-some-surprises/#624b72db6e59.