Food × analyte
DDT p,p' on lettuce
1999–2017 · 9 tested years
3,581samples tested
for this analyte
for this analyte
18samples with
a detection
a detection
0.5%of analyte-tested samples
Testing detected DDT p,p' in 18 of 3,581 lettuce samples actually tested for this analyte. This percentage uses analyte-tested samples, not all 6,655 samples of this food.
Year-by-year results
Actual tested and detected sample counts.
9 tested years between 1999 and 2017. Gaps mean no validated tests in this release.
Read the yearly counts
| Year | Tested | Detected | Rate |
|---|---|---|---|
| 1999 | 54 | 0 | 0.0% |
| 2000 | 216 | 0 | 0.0% |
| 2001 | 159 | 1 | 0.6% |
| 2002 | Not tested | — | — |
| 2003 | Not tested | — | — |
| 2004 | 743 | 7 | 0.9% |
| 2005 | 743 | 3 | 0.4% |
| 2006 | Not tested | — | — |
| 2007 | Not tested | — | — |
| 2008 | Not tested | — | — |
| 2009 | Not tested | — | — |
| 2010 | 185 | 0 | 0.0% |
| 2011 | Not tested | — | — |
| 2012 | Not tested | — | — |
| 2013 | Not tested | — | — |
| 2014 | Not tested | — | — |
| 2015 | 347 | 0 | 0.0% |
| 2016 | 756 | 6 | 0.8% |
| 2017 | 378 | 1 | 0.3% |
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: 1999, 2000, 2001, 2004, 2005, 2010, 2015, 2016, 2017.