Use the Directory to find a participating laboratory. PAT Reports are valid only for the location listed on the report.

Instructions: Start typing Organization Name and select from the dropdown list or use a combination of Analysis and Country. Click search to filter the list. All other fields may be used to refine your search at any time. If you need to start over, click Clear.

Need more space to search? Use the full-screen directory.



How to Read a PAT Report

Hover over the column headers to get tooltips on the information you will see on a PAT Report.

Round Sample Results

ContaminantContaminant tested by the laboratory
UnitUnit of Measure
ResultThe lab found this concentration
Ref. ValueTop performing labs found this concentration
Lower LimitLower end of the Acceptance Range
Upper LimitUpper end of the Acceptance Range
z-ScoreThe difference between the Result and the Ref. Value, divided by the standard deviation
RatingA = Acceptable
U = Unacceptable
E = Excused

Overall Proficiency Table

ContaminantContaminant tested by the laboratory
RoundProgram Round
Round ScoreEvaluation of the round data submitted
Round PerformancePass/Fail evaluation for the round (program specific)
Proficiency StatusRolling proficiency status based on three or four rounds (program specific)


PAT Report Program Dates

Last Updated: 05/2/2024 01:46PM