Result interface

• ack
• accession
• specimen_status
• result
• report_metadata

Validation is deterministic and fail-closed: every inbound event must correlate to the exact laboratory, adapter, transmission and order, and an unknown event kind, unknown field or unknown specimen state is refused rather than reinterpreted.

• Collected
• In transit
• Received
• Accepted
• Rejected

• Partial, final and corrected results are distinct append-only versions, never overwrites; a superseded version is retained with its provenance.
• Observations carry what the laboratory supplied — value, unit, reference interval, flag, method, observation time — plus canonical mapping state. Values and units are not converted unless a validated normalization was recorded.
• Terminology codes are reported only as supplied; a missing code is reported as not modeled and is never derived.

Inbound requests use a timestamped HMAC signature, are constrained to the configured adapter, and are rejected outside a 300-second tolerance. Replayed identifiers, stale signatures, unknown fields and oversized bodies fail closed.