Food × analyte
Tetrahydrophthalimide (THPI) on grape juice
1998–2021 · 5 tested years
1,640samples tested
for this analyte
for this analyte
83samples with
a detection
a detection
5.1%of analyte-tested samples
Testing detected Tetrahydrophthalimide (THPI) in 83 of 1,640 grape juice samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 3,531 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
5 tested years between 1998 and 2021. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1998 | 19 | 0 | 0.0% |
| 1999 | Not tested | — | — |
| 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 | 214 | 2 | 0.9% |
| 2009 | Not tested | — | — |
| 2010 | Not tested | — | — |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | 176 | 0 | 0.0% |
| 2014 | 531 | 35 | 6.6% |
| 2015 | Not tested | — | — |
| 2016 | Not tested | — | — |
| 2017 | Not tested | — | — |
| 2018 | Not tested | — | — |
| 2019 | Not tested | — | — |
| 2020 | Not tested | — | — |
| 2021 | 700 | 46 | 6.6% |
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, 2008, 2013, 2014, 2021.