5. Laboratory Information Systems

COMPUTERS IN HEALTHCARE

  • Importance of Computers: Essential tools in the healthcare system.

  • Types of Software: Various software types are utilized to manage data, monitor patients, and automate analyzers.

  • Computer Literacy: It is crucial for Medical Laboratory Technicians/Assistants (MLT/As) to be proficient in using technology.

FUNCTIONS OF COMPUTERS IN LIS

  • Data Management: Efficiently handles laboratory data.

  • Automation: Streamlines laboratory processes.

  • Integration: Connects various systems for improved data flow.

  • Quality Control (QC): Supports quality assurance processes.

  • Accessibility and Collaboration: Facilitates access to data and enhances teamwork.

  • Reporting and Analysis: Provides tools for generating reports and analytical insights.

  • Security: Ensures data protection and compliance.

KEY TERMS

  • LIS: A computer system specifically designed for clinical laboratory use. Key functions include:

    • Collection of patient information.

    • Generation of test results.

    • Assembling data output.

    • Production of reports.

    • Storage of laboratory data.

  • LIMS: Stands for Laboratory Information Management System, which focuses on sample-centric information delivery to clinicians accurately and in a timely manner.

  • HIS: Refers to the Hospital Information System, the primary database in a hospital containing patient data initiated at the patient's admission or registration. Accessible by LIS when necessary.

COMPUTER NETWORKS

  • Definition: A set of computing devices connected to transmitt resources or information. Can range from simple connections to complex networks spanning multiple locations.

  • Functionality: Facilitates secure sharing of medical records across hospital sites and different departments.

COMPUTER SOFTWARE

  • Description: Programs designed to operate computer hardware for data processing.

  • Importance: Essential for the effective functioning of LIS by providing necessary tools, infrastructure, and capabilities to manage laboratory operations.

  • LABORATORY INFORMATION MANAGEMENT SYSTEMS (LIMS)

  • Purpose: Designed to manage and automate laboratory operations and data processes.

  • Capabilities:

    • Increases productivity and guarantees process integrity.

    • Automates workflows and integrates with automated instruments.

    • Manages samples and associated information.

    • Helps with inventory management and sample status tracking, enhancing laboratory efficiency.

SPECIALIZED LABORATORY INFORMATION SYSTEM (LIS)

  • Function: Manages and streamlines various processes involved in laboratory operations.

  • Role: Acts as the central hub for managing clinical and administrative information.

KEY ASPECTS OF LIS

  • Sample Management: Tracks each sample from collection to analysis with unique identifiers.

  • Test Ordering and Scheduling: Allows electronic test request submissions and prioritization by healthcare providers.

  • Result Entry & Reporting: Captures and reports test results from analyzers.

  • Workflow Management: Streamlines laboratory workflow via automation of routine tasks.

  • Quality Control: Monitors instrument performance and analyzes QC data.

LABORATORY INFORMATION SYSTEM FUNCTIONALITIES

  • Complete Software Program: Covers clinical laboratory functions, including:

    • Collection, reporting, and quality assurance of specimens.

    • Integration through communication networks managing data from various medical processes.

  • Components:

    • Storage and viewing of patient results.

    • Support for comprehensive analyzer interfaces.

    • Inventory management capabilities.

LIMS vs. LIS

  • Comparison:

    • LIMS: Focuses on sample-centric data management.

    • LIS: Integrates patient information and test results into a unified system, supporting both.

COLLECTION LISTS

  • Definition: Reports generated by LIS specifying details for specimen collection based on provider orders.

  • Included Information:

    • Patient demographics.

    • Test orders.

    • Specimen types.

    • Collection instructions.

    • Ordering physician information.

HOSPITAL INFORMATION SYSTEM (HIS)

  • Overview: A comprehensive computerized database system that processes patient data supporting patient care and integrating various hospital functions: clinical, administrative, financial.

  • Functions: Manages patient census, demographics, medical records, and is typically interfaced with LIS and other hospital departments (pharmacy, imaging, nursing orders).

FUNCTIONS OF LIS
1. Preanalytical Functions

  • Sample Receiving and Accessioning

    • Barcode labeling and specimen routine handling.

    • Test ordering and requisitioning.

    • Patient identification and verification.

    • QC checks, specimen tracking, and chain of custody.

    • Worklists and collection lists generation.

2. Analytical Functions

  • Processes:

    • Test order processing.

    • Specimen tracking and instrument integration.

    • Results validation, reporting, and data analysis.

    • Maintaining an audit trail of all actions.

3. Post-analytical Functions

  • Processes:

    • Results verification and reporting.

    • Alerts and notifications for critical values.

    • Results interpretation and assistance.

    • Results review and confirmation.

    • Integration with EMRs and specimen storage management.

SAMPLE COLLECTION
1. Samples Collected by Lab Staff

  • Typically blood samples, labeled immediately with LIS generated labels.

  • Ordered by nursing staff; patient ID confirmed by the phlebotomist.

  • Samples sent to the laboratory for processing.

2. Samples Collected by Nursing Staff

  • Includes swabs, urine, sputum, labeled upon collection with LIS generated labels.

  • Ordered by nursing staff; patient ID confirmed by the nurse.

3. Sample Tracking and Workflow Management

  • Sample Tracking: Ensures the identification and monitoring of samples throughout their lifecycle in the lab.

  • Workflow Management: Optimizes laboratory workflows, assigning tasks and scheduling analyses for timely results.

LABELING IN LIS

  • Label Components:

    • Patient information, tests ordered, unique specimen identifier (barcode).

    • Date and time of collection, phlebotomist initials.

  • Label Importance: Key for sample identification, tracking, and test order verification.

BAR CODES

  • Description: 1-dimensional barcodes encoding specimen data generated by LIS, consisting of vertical parallel lines of varying widths.

  • Usage:

    • Reduces errors in specimen handling.

    • Barcode readers on analyzers mitigate manual data entry and prevent transcription errors.

  • Process: Specimen barcodes scanned to “receive” samples into LIS, assisted by phlebotomy devices generating labels from patient wristband barcodes.

MOBILE COLLECTION DEVICES

  • Functionality: LIS generated collection lists appear on mobile devices enabling scanning of patient wristbands and label generation based on physician orders.

ACCESSIONING INPATIENT SPECIMENS

  • Process:

    1. Physician orders test.

    2. Orders entered into HIS.

    3. Collection by lab staff.

    4. Samples arrive in the laboratory and are processed in LIS.

    5. Tests completed, results verified, entered in LIS, viewable by medical staff.

ACCESSIONING REFERRED IN SPECIMENS

  • Process:

    1. Specimens collected off-site, labeled with patient info.

    2. Orders entered into LIS generating site-specific labels.

    3. Specimen processing follows standard procedures as inpatient samples.

DATA STORAGE DEVICES

  • Overview: Primary data storage systems within LIS using massive storage devices (hard drives, databases). Stores patient data, demographics, and QC data.

LIS MIDDLEWARE

  • Definition: Software that connects hardware systems, transmitting results from analyzers to LIS.

  • Benefits: Enhances automation, minimizes manual errors, provides alerts for critical values, and holds back results for verification by MLT.

AUTO VERIFICATION

  • Description: A process where software automatically verifies results based on established criteria without manual intervention.

  • Process:

    • Verified results are sent to LIS.

    • Results not meeting criteria require manual verification by an MLT, highlighting delta results or specimen interference.

SPECIMEN REJECTION CRITERIA

  • Common Reasons for Rejection:

    • Unlabeled specimen, incorrect specimen container, delayed transport, leaking specimens.

    • Notifications to the patient care area via LIS when specimens are canceled.

REFERRED OUT TESTS

  • Overview: Tests not completed at the facility sent to reference labs for processing.

  • Procedure:

    • Specimens packed according to transportation regulations, with computer-generated packing slips via LIS.

    • Specimens compiled for courier transport.