nanogram per millilitre
Mass concentrationexact by definition
One nanogram in one millilitre, numerically equal to one microgram per litre. It is the unit of therapeutic drug levels, hormone assays and immunoassay results — quantities small enough that the analytical method is usually the limiting factor.
Watch out: Equal to one part per billion in water. At this level a result is inseparable from its method: what was extracted, what recovery was assumed, and what the instrument's detection limit was. A bare ng/mL figure without that context is not really a measurement.
| 1 | 0.001 |
One nanogram per millilitre in every mass concentration unit
| 0.001 | milligram per litre (mg/L) | |
| 1 | microgram per litre (µg/L) | |
| 0.000001 | gram per litre (g/L) | |
| 0.001 | microgram per millilitre (µg/mL) | |
| 0.0001 | milligram per decilitre (mg/dL) | |
| 1.00000e-07 | gram per decilitre (g/dL) | |
| 0.000001 | kilogram per cubic metre (kg/m³) | |
| 1 | nanogram per millilitre (ng/mL)this unit |
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