ORIGINAL COMPANY-CONTEXT PRACTICE
Match diagnostic result messages to the correct specimen
Original practice scenario: A hypothetical diagnostics interface receives preliminary, corrected and repeated result messages. Design matching and status handling without conflating patient, order and specimen identifiers.
Written for independent practice using company context; this is not a verified question from a company interview.
A REASONED APPROACH
Model answer.
Use explicit order, specimen, assay and result-version identities. A patient identifier alone is too broad to decide which observation a new message updates.
Work through it
- Validate the message envelope and the authorized identifier mappings, quarantining unresolved or conflicting references rather than assigning the nearest matching patient record.
- Apply a defined result lifecycle that distinguishes preliminary, final, corrected and cancelled observations, retaining previous versions and their source messages.
- Make repeated messages idempotent and expose reconciliation status to the responsible workflow, testing split specimens, repeated assays and delayed corrections.
Tradeoffs to discuss
- Strict matching protects identity integrity but increases exception work; fuzzy matching may help propose candidates while requiring reviewed confirmation.
Common pitfalls
- Do not replace a final observation with an older preliminary message because it arrived later.
- The interface must preserve clinical review authority and avoid displaying technical message acceptance as a medical interpretation.