Nanograms per milliliter (ng/mL)

Some medical tests report results in nanograms (ng) per milliliter (mL).

  • A nanogram is one-billionth of a gram. A gram is about 1/30 of an ounce.
  • A milliliter measures fluid volume equal to 1/1000 liter. A liter is a little bigger than a quart.