Turnaround Time (TAT) Monitoring Record
Required by: ISO 15189:2022 Cl. 8.8.2 — Quality indicators
Measured turnaround time against the laboratory's own published commitment, per test and per phase.
Checked against NABL 112A (Issue 01, 18-Dec-2024) · page updated 23 September 2026
How often it must be recorded
Continuously captured; summarised on the quality-indicator interval.
Every field this record must carry
An assessor reads the record, not the intention behind it. A field left off the form is a finding, however well the work was actually done.
- Test and priority (routine / urgent)
- Published TAT commitment
- Registration time
- Collection time
- Receipt in lab time
- Result authorised time
- Report delivered time
- Achieved TAT and breach flag
- Percentage within commitment for the period
What NABL 112A actually says
TAT is one of the quality indicators contemplated under ISO 15189:2022 Cl. 8.8.2 as carried in NABL 112A. Measuring only registration-to-report hides where the delay actually sits.
Source: NABL 112A — Specific Criteria for Accreditation of Medical Laboratories, Issue 01, 18-Dec-2024, 108pp. Downloaded from nabl-india.org 2026-09-23. Paraphrased with attribution. ISO 15189:2022 clause numbers and titles are cited as references; the standard's text is copyrighted and is not reproduced here.
What an assessor actually asks for
Reasoning from the clause, not from a published checklist — NABL does not publish assessor scripts. Treat this as how the requirement is normally evidenced.
- The record itself, for a period they choose — not a blank template.
- Completeness across the period. Gaps are the finding; a perfect January and an empty March reads worse than a consistently modest record.
- Who recorded and who verified, with dates. An unsigned record is not evidence that the work was checked.
- The linked procedure — the SOP that says this record must exist, at this frequency, in this format.
- What happened when it went wrong. Every record above has a failure path, and the action taken is usually the part that is missing.
Records this one depends on
- Quality Indicators Record Cl. 8.8.2
- Critical Value Notification Log Cl. 7.4.1
Where the software fits
HealthFlow is lab software, not an accreditation body. It is not NABL accredited and using it does not make a laboratory accredited or compliant — the records above are the laboratory's own responsibility.
What it does do is produce some of this evidence as a by-product of normal work: turnaround time is measured per test on the owner dashboard, reports are versioned and locked on authorisation with dual signatures, every report access is written to an append-only audit trail enforced at the database, retained two years, and all of it exports at any time.