Where Teams Often Struggle with ISO 15189:2022 Point 7

On paper, Clause 7 of ISO 15189:2022 is straightforward: document your processes, keep samples traceable, manage risk. In practice, Point 7 is where accreditation assessments most often generate findings — not because teams do not understand the standard, but because the pre-examination phase is operationally hard to control. Here are the recurring struggle areas and pragmatic fixes that fit daily routines.

Struggle 1: Sample Identification and Traceability

Clause 7.2.6 expects unequivocal traceability from patient to result. The common finding is a broken chain: a sample received with no timestamp, no recorded handler, or a handwritten label that cannot be reconciled with the request.

Why it is hard: multi-site collection, couriers and legacy systems that do not talk to each other, plus staff turnover that erodes consistent practice.

Practical fix: barcode-driven identification tied to the request, with automatic logging of receipt time and handler identity. The audit trail is then generated as a by-product of the workflow rather than written up after the fact.

Struggle 2: Incomplete Examination Requests

Clause 7.2.3 requires requests to carry sufficient information. Laboratories often accept incomplete requisitions anyway, because the ordering clinic is a customer and the sample is already drawn.

Practical fix: define explicit completeness criteria and, where possible, enforce them with a digital requisition that will not submit with mandatory fields missing. Track the rejection rate and share it with requesters — the data reframes enforcement as protecting their patients.

Struggle 3: Sample Acceptance and Rejection Decisions

Clause 7.2.6 requires documented acceptance/rejection criteria and, in 2022, documented reasoning when a compromised sample is accepted in the patient's interest. The finding is usually inconsistency: one technician accepts a hemolysed sample with a note, another rejects it, and neither decision is recorded.

Practical fix: make the criteria visible at accessioning and capture every accept/reject decision — reason, analyte affected, and impact — in the system. Quality flags (hemolysis, clotting, insufficient volume) that trigger an automatic hold turn a judgement call into a documented, consistent process.

Struggle 4: Transport and Storage Conditions

Clause 7.2.5 expects appropriate, monitored transport and periodic evaluation of its adequacy. Many laboratories still rely on a courier and a single arrival temperature, with no record of what happened in between.

Practical fix: define analyte-specific time and temperature windows, monitor conditions continuously in transit, and alert when a window is breached. This is covered in depth in Beyond the Thermometer.

Struggle 5: Risk Assessment That Is More Than a Checkbox

The 2022 standard's risk-based approach (Clause 7.1) is unfamiliar to teams raised on checklists. A generic risk register that is never linked to operational change is a common weak point.

Practical fix: convene the people who actually run pre-examination — accessioning, phlebotomy, transport — and identify real, specific risks (for example, patient-ID mismatch at batch collection). Assign a concrete mitigation to each, and measure whether it works. A sample tracking system is itself a mitigation: it enforces identity matching and produces the incident data that demonstrates effectiveness.

The Common Thread: Documentation Burden

Every struggle above is really a documentation-and-visibility problem. Manual, dispersed records make traceability fragile and audits painful. Digitising the pre-examination workflow removes the burden at source: the records are created automatically, versioned, and available on demand. That is the difference between preparing for an assessment and simply being ready for one.

Frequently Asked Questions

What does Point 7 / Clause 7 of ISO 15189:2022 cover?

Clause 7, “Process requirements,” covers the laboratory's operational processes across the pre-examination, examination and post-examination phases, including risk management, traceability, sample handling, results and nonconforming work. Clause 7.2 is the pre-examination (pre-analytical) phase.

What are the most common Clause 7 non-conformances?

Broken sample identification/traceability, incomplete examination requests, undocumented acceptance/rejection decisions, unmonitored transport conditions, and superficial risk assessments are among the most frequently cited pre-examination findings.

Why do labs struggle with pre-examination requirements?

Because pre-examination spans external sites and couriers, relies on manual steps, and demands consistent documentation across many people. Without digital visibility, enforcing procedures and producing an audit trail is difficult.

How can a lab make Clause 7 compliance easier?

By digitising the pre-examination workflow so that identification, chain of custody, transport monitoring and acceptance decisions are captured automatically. See our Section 7 guide for the full requirement map.

See how S4DX removes the pre-examination documentation burden.