| Trace metals (TMEs) | Values obtained from poultry methacompost in TME (mg/kg MS) | Limit values in TME (mg/kg MS) according to the NF U44-051 standard |
| Arsenic (As) | 16.139 × 10−3 | 18 |
| Cadmium (Cd) | 26.562 × 10−3 | 3 |
| Chromium (Cr) | 105.052 × 10−3 | 120 |
| Mercure (Hg) | 107.749 × 10−3 | 2 |
| Nickel (Ni) | 58.623 × 10−3 | 60 |
| Lead (Pb) | 0.00 | 180 |
| Selenium (Se) | 0.00 | 12 |
| Copper (Cu) | 1020.611 × 10−3 | 300 |
| Zinc (Zn) | 184.448 × 10−3 | 600 |