KnowYourStuffNZ's pill testing results

KnowYourStuffNZ tested 5319 pills at 51 events from 2016 to 2020. Below you can select the substances that people thought they had. The chart and table show you what those pills actually contained.


What pills actually contained (results grouped by drug family)

What pills actually contained (detail on specific drugs)

Note that the composition of the 'Other' drug family varies across seasons as it was derived from each year's data by grouping together drugs that were found infrequently


KnowYourStuffNZ is a community organisation of volunteers operating in collaboration with the New Zealand Drug Foundation to provide drug related harm reduction services at events around New Zealand. These pages show KnowYourStuffNZ pill testing results for events attended between 1 April 2016 and 31 March 2020.

How to see the results

Click on the 'Pill testing results' tab above.

Select which season's data you want to look at

Use the dropdown menu to select what year's data you want to see. Select 'All' to view the results summed across all years

Select which presumed substance/s you want to look at

In the panel of checkboxes, select at least one substance from the list. These substances are what clients thought they had before their pills had been tested.

Once you have selected at least one substance, a chart and a table will appear. These show the testing results, i.e. what the pills (that clients thought contained the substance you selected) actually turned out to contain. For example, if you select 'Amphetamine', you will see the testing results for all of the pills that were thought by clients to contain Amphetamine.

Results chart

The chart shows testing results grouped into drug families. These families are groupings of drugs that have similar structures and psychoactive effects.

Results table

The table shows the full list of drugs that were found ('Drug' column), the family that each drug is grouped into ('Drug family' column), and the number of pills that contained that drug ('Number of samples' column).

Selecting more than one presumed substance

If you select more than one presumed substance, the testing results will be added up across all of those presumed substances.

Further information

For more results from KnowYourStuffNZ's pill testing, visit

These pages have been made using R. The code for an earlier version of this Shiny app can be found at