Unit per gram (U/g) of hemoglobin in a galactosemia test

The amount of galactose-1-phosphate uridyltransferase (GALT) in a blood sample can be measured in units per grams (U/g) of hemoglobin.

  • A unit is an arbitrary amount agreed upon by scientists and doctors. A gram is an amount equivalent to 1/28 ounce.
  • Hemoglobin is the substance in red blood cells that carries oxygen.

Last Updated: April 20, 2009

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