Food × analyte
Tetrahydrophthalimide (THPI) on tomatoes
1998–2023 · 7 tested years
1,963samples tested
for this analyte
for this analyte
98samples with
a detection
a detection
5.0%of analyte-tested samples
Testing detected Tetrahydrophthalimide (THPI) in 98 of 1,963 tomatoes samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 7,783 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
7 tested years between 1998 and 2023. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1998 | 18 | 0 | 0.0% |
| 1999 | 90 | 0 | 0.0% |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | Not tested | — | — |
| 2005 | Not tested | — | — |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | 157 | 14 | 8.9% |
| 2015 | 688 | 37 | 5.4% |
| 2016 | 470 | 37 | 7.9% |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | Not tested | — | — |
| 2022 | 226 | 6 | 2.7% |
| 2023 | 314 | 4 | 1.3% |
Testing panels and detection limits change. These observations do not establish a causal trend.
About these results
Source: USDA Pesticide Data Program. Included annual releases: 1998, 1999, 2014, 2015, 2016, 2022, 2023.