The test is finished. The turnaround clock is still running.
For Quality managers and laboratory leads · Plan implementation
TL;DR — what you’ll learn
- Define the clock's start and finish before reporting turnaround time.
- Separate sample transit, queue, testing, review and result handoff.
- Keep retests, missing information and incomplete cases visible.
- Use the stage evidence to improve coordination without pressuring required scientific work.
Production calls the laboratory about a batch waiting for release. The analyst completed the work yesterday, the report is waiting for review and the ERP has no status update. Calling all of that laboratory time makes the delay visible but assigns no useful next step.
How can food businesses measure laboratory turnaround time and identify avoidable waiting?
Laboratory turnaround time needs a stated boundary and stage timestamps. Separate the time required for the approved work from waiting for samples, information, review or result delivery. A useful dashboard identifies the next accountable action and preserves the quality process governing the result.
- 01Capture sample receiptIdentity and start of the account
- 02Record work milestonesStart, result and approval
- 03Reconcile elapsed stagesQueues and missing timestampsAre the stage timestamps complete?YesReview the bottleneckNoResolve the timing gap before attributing delay.
- 04Review the bottleneckAssign the next improvement
Illustrative information flow. The article explains the evidence, exceptions and responsible decisions. Diagram: NextEdge Labs.
Choose the clock that matches the question
Sample collection to approved report describes a different interval from laboratory receipt to test completion. Report approval to ERP acknowledgement is another interval. Name the measure and show its boundaries. Do not compare two teams' turnaround figures until those definitions match.
Use elapsed time or business hours consistently and state which is used. Weekends, planned operating hours and sample timing can change the interpretation. Keep the original timestamps so the business can reproduce the calculation rather than storing only a duration that cannot be checked later.
An illustrative timeline exposes the handover
Suppose a sample is received at 08:00 Monday, testing starts at 11:00 and completes at 15:00. Review finishes at 10:00 Tuesday and the approved record reaches the ERP at 12:00 Tuesday. On an elapsed-time basis, receipt to ERP acknowledgement is 28 hours. That includes three hours before testing, four hours of recorded testing, nineteen hours before review completion and two hours for the final handoff.
Those stages do not establish which time was avoidable. The approved method may require particular work or timing, and the review may have found a legitimate question. The timeline gives the manager the evidence needed to investigate each stage instead of asking the analyst to make the whole 28 hours shorter.
| Stage | Duration | Question to investigate |
|---|---|---|
| Receipt to test start | 3 hours | Was the sample ready and assigned? |
| Test start to recorded completion | 4 hours | Does this reflect the approved work? |
| Completion to review approval | 19 hours | Was review waiting or resolving an issue? |
| Approval to ERP acknowledgement | 2 hours | Was the handoff complete and accepted? |
Keep incomplete work out of a misleading average
An average based only on completed samples can improve while difficult cases remain open. Show open work by stage and age alongside completed-case durations. Retests, rejected samples and missing information need distinct reasons, with the original case relationship preserved.
Where sample types or methods differ substantially, separate them before comparing durations. A single average can obscure a queue for one test family or a change in the mix of work. Show the number of cases behind each statistic and a distribution or percentile when it helps reveal long waits, with the calculation clearly defined.
Give each waiting state a responsible owner
Waiting for sample information may belong to production or receiving. Waiting for analysis, review or result transmission may have different owners. The dashboard should identify the missing input or pending decision and the person or team able to act. A red overdue label without that information creates another round of phone calls.
Keep urgency and quality authority separate. Production's desired dispatch time can inform planning, but it does not change the approved test method or release criteria. Escalation should request the next authorised action and expose the operational impact, not imply permission to skip required work.
Connect the result state to the inventory handoff
Quality records can be linked to inventory and production events in ERP systems; Microsoft's quality-order documentation illustrates those relationships. The integration design needs to specify which approved state the ERP receives and whether a separate release decision follows. Result approved and batch released should not be treated as interchangeable labels.
Record acknowledgement from the receiving system and show failed updates in an owned queue. An email attachment sent by the laboratory is not proof that the ERP accepted the result. Reconcile approved source records with accepted destination records for the defined period.
Source: Microsoft Learn · Quality-order references to inventory and production records. Reference details
Scope the pilot around one recurring delay
Choose a test family and map its actual states with laboratory, quality and planning owners. Collect timestamps and reason codes from a representative period. Begin with visibility and reminders for the stage that repeatedly lacks an owner or source record.
Measure reduced waiting or manual follow-up using that same boundary after the change. Keep necessary test and review work intact. A useful project can improve the handoff without promising that scientific work itself will take less time.
Summary
Turnaround time becomes actionable when its clock and stages are explicit. Queue, testing, review and transmission each need their own evidence and owner. The resulting view can reduce avoidable waiting while preserving the approved scientific and quality decisions.
What to do next
- Agree one start and finish definition with laboratory, quality and production planning.
- Reconstruct a recent delayed case using stage timestamps and reasons.
- Pilot the handoff or reminder change that addresses the largest evidenced waiting stage.
Scope this automation around your operation
Tell us your current systems, transaction volume and the exception you need to resolve. We can discuss a bounded first release, its review controls and how to measure the result.
Sources and further reading
Sources checked 15 October 2026. The worked examples and software evaluation suggestions are NextEdge Labs’ editorial analysis.
- Quality ordersMicrosoft Learn · Dynamics 365 Supply Chain Management documentation, accessed October 2026
Product reference for inspection records, inventory blocking and certificates generated from selected test results. Quality owners determine specifications, disposition and approval requirements.
Visual credits
AI-generated illustration created for NextEdge Labs; it does not depict a client facility. Workflow diagram by NextEdge Labs. Icons from Lucide (ISC licence).