Food × analyte
Tetrahydrophthalimide (THPI) on grapes
1996–2023 · 7 tested years
3,477samples tested
for this analyte
for this analyte
146samples with
a detection
a detection
4.2%of analyte-tested samples
Testing detected Tetrahydrophthalimide (THPI) in 146 of 3,477 grapes samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 9,147 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
7 tested years between 1996 and 2023. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1996 | 2 | 2 | 100.0% |
| 1997 | Not tested | — | — |
| 1998 | Not tested | — | — |
| 1999 | Not tested | — | — |
| 2000 | Not tested | — | — |
| 2001 | Not tested | — | — |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | 738 | 68 | 9.2% |
| 2005 | 739 | 75 | 10.1% |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | 210 | 0 | 0.0% |
| 2010 | 373 | 0 | 0.0% |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | Not tested | — | — |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | Not tested | — | — |
| 2022 | 706 | 0 | 0.0% |
| 2023 | 709 | 1 | 0.1% |
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: 1996, 2004, 2005, 2009, 2010, 2022, 2023.