Nanogram per Kilogram

**Semantic type:** Quantitative Concept

**Definition:** A unit of mass fraction expressed as a number of nanograms of a substance per kilogram of the mixture. The unit is also used as a dose calculation unit.

**Synonyms:** - Attogram per Microgram - Femtogram per Milligram - Nanogram/Kilogram - Picogram per Gram - Yoctogram per Picogram - Zeptogram per Nanogram - ag/mcg - ag/ug - fg/mg - fg/mg - nanogram per kilogram - ng/kg - ng/kg - ng/kg - ng/kg - ng/kg - pg/g - pg/g - yg/pg - zg/ng