LIMS Development (Laboratory Information Management System)

Sample registration capturing the sample type, source, collection date, requested tests, priority, and chain of custody from the point of receipt. Unique sample identifier assigned at registration with barcode label printed for physical sample tracking through storage and testing. Sample status tracking through every stage of the laboratory workflow -- received, accessioned, in storage, in testing, results pending review, approved, and disposed -- with current status and location visible at all times. Sample storage location management recording the rack, shelf, and position for samples in refrigerators, freezers, and biobanks. Chain of custody log recording every transfer of the sample between personnel, with name, date, and purpose. Sample disposal recording at end of retention period with the disposal method and authorising signature. The sample lifecycle management that replaces the paper chain-of-custody form with a complete, retrievable electronic record.

Test order creation from the sample registration, selecting the analytical methods to be performed and assigning them to the relevant laboratory section or instrument. Test method library defining the procedure reference, acceptance criteria, required controls, and result entry format for each analytical method. Analyst assignment to test orders with workload visibility across the laboratory section for scheduling. Priority management for urgent samples with queue position visible to analysts and supervisors. Test order status tracking from assigned through in-progress to result entry complete, showing where each sample is in the testing workflow. Test order amendment workflow for additional test requests after the original order is placed, with the amendment recorded in the audit trail. Re-test workflow for samples requiring repeat analysis, with the original and repeat results linked in the sample record.

Direct instrument integration using API, ASTM, HL7, or file-based import depending on the interface capability of each instrument in your laboratory. Results imported from the instrument into the LIMS result record with the instrument ID, run date, and raw result file stored against the result for traceability. Bidirectional worklist download to instruments that support it, transmitting the sample identifier and requested test parameters before the run and receiving results back on completion. Manual result entry with field-level validation -- unit of measure, decimal places, and range checking -- for analytical methods where instrument integration is not available or applicable. Calculation engine for derived results where the reported result requires calculation from raw instrument output. Result entry audit trail capturing who entered or imported each result and when, with any subsequent modification recorded with the reason for change.

Result review workflow presenting the analyst's entered or imported results to the reviewing scientist with the test method acceptance criteria, the instrument run controls, and any out-of-specification flags displayed alongside. Out-of-specification alert when a result falls outside the acceptance criteria, triggering the OOS investigation workflow before the result can be approved or rejected. Electronic signature at the review step capturing the reviewer's identity, the date and time, and the meaning of the signature as required by 21 CFR Part 11. Second-level approval for results that require QP or managerial sign-off before release. Approval audit trail showing the complete approval chain for each result from entry through review to final release. Result rejection workflow with the reason for rejection recorded and the re-test order created automatically.

CoA template configuration for each product or sample type, defining the layout, the test parameters to include, the specification limits to display, and the header and footer information. Approved results pulled automatically into the CoA template on final approval, eliminating manual data entry into a separate document. CoA numbering and version control with each CoA uniquely referenced and the approval status recorded. Electronic signature on the released CoA by the authorised signatory. CoA distribution recording the customers or sites to whom the CoA was sent and the date of dispatch. CoA archive with search by lot number, product, date range, or customer, making historical CoA retrieval a seconds exercise for customer requests or regulatory review. Batch CoA generation for multi-lot releases where multiple CoAs need to be produced and distributed simultaneously.

Complete audit trail capturing every record creation, modification, and deletion in the system -- the field changed, the previous value, the new value, the user identity, and the timestamp -- stored in an immutable log that cannot be altered by any user including administrators. Electronic signature implementation meeting the definition under 21 CFR Part 11: signed records bound to the signature, meaning captured at the point of signing, identity verification before each signature is applied. Access control with role-based permissions, account lockout after failed login attempts, session timeout, and a complete access log. System validation documentation produced as part of the development project: User Requirements Specification, Functional Specification, Installation Qualification, Operational Qualification, and Validation Summary Report. Change control procedure for post-validation modifications, maintaining the validated state and updating validation documentation for each approved change.