DR1 - Acceptance criteria taken directly from referenced specification. If more than one specification is referenced then the acceptance criteria will be the most stringent of all referenced specifications. No further consideration of uncertainty necessary.
DR2 - Acceptance criteria advised by client. Uncertainty of the result has been taken into account and details of this are provided with the report.
DR3 - ASAMS derived acceptance criteria. Uncertainty considerations documented and supplied with report.
DR4 - Other decision rule applied. Full details supplied with report.