Collection Site Master File

Collection Site Master File

Collection Site form — Purpose and best practices

Use the Collection Site form to predefine anatomical body sites from which specimens are collected. A curated picklist speeds order entry, standardizes documentation, and reduces errors from free‑text entry.

Why it matters

  • Fewer order entry mistakes and mislabeling
  • Clearer clinical context for interpretation (e.g., wound vs. nasopharynx)
  • Clean data for interfaces and reporting (no ambiguous text)
  • Supports regulatory and quality documentation

How it’s used in workflows

  • Order entry: Users select a site from a controlled list rather than typing free text.
  • Labeling: The chosen site can print on specimen labels/requisitions.
  • Interfaces: Map to standard fields (e.g., HL7 v2 SPM-8 body site; FHIR Specimen.collection.bodySite).

Setup tips

  • Standardize on codes: Map each site to a SNOMED CT body-structure code; include laterality (left/right) and qualifiers when relevant.
  • Tie to specimen type/test: Filter available sites based on specimen type (e.g., NP swab vs. blood draw vs. tissue).
  • Require when relevant: Make collection site mandatory for tests where site affects interpretation (e.g., wound, respiratory, cytology).
  • Manage synonyms: Provide common synonyms/aliases and display a single canonical value.
  • Allow controlled exceptions: Offer “Other (specify)” only when necessary, capturing a reason and free text for review.
  • Distinguish concepts: Do not confuse anatomical “collection site” with “collection location” (facility/room/department).
  • Govern and maintain: Periodically audit usage, remove duplicates, and update lists as procedures change.

Example entries

  • Blood: Left forearm vein; Right internal jugular line (central)
  • Respiratory: Nasopharynx; Anterior nares; Oropharynx; Sputum
  • Wound/tissue: Left foot ulcer; Right knee synovial fluid
  • Urine: Catheterized; Midstream clean-catch
  • CSF: Lumbar puncture (L3–L4)

Configured well, the Collection Site form streamlines ordering, improves data quality, and ensures consistent, interoperable documentation of where specimens originate.


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