| Label | Id | |
|---|---|---|
| ng/mg | CONC | |
| Milligram per Kilogram | CONC | |
| Nanogram per Milligram | CONC | |
| Picogram per Microgram | CONC | |
| ug/g | CONC | |
| zg/fg | CONC | |
| ag/pg | CONC | |
| mg/kg | CONC | |
| Zeptogram per Femtogram | CONC | |
| fg/ng | CONC | |
| pg/ug | CONC | |
| Microgram per Gram | CONC | |
| Femtogram per Nanogram | CONC | |
| pg/mcg | CONC | |
| Yoctogram per Attogram | CONC |