The methodId on an AnalyticalMethod is what regulators look for in compliance reports: "8260B" confirms EPA's GC/MS method for VOCs, "200.8" confirms the ICP-MS metals method. Lab reports typically include the methodId in their data files, and piper matches it to an existing AnalyticalMethod record during import so each AnalyticalResult carries an accurate method reference. An unknown methodId triggers a review step before results are committed.
Technical section
Data model, API, and internals — visible to developers.