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To calculate the grams of protein supplied by a TPN solution, multiply the total volume of amino acid solution (in ml*) supplied in a day by the amino acid concentration.

If the total volume of AA is not stated in the prescription, you can calculate it. Just multiply the rate of infusion of AA by 24 hr.

*Remember that 1 ml = 1 cc.

Example Protein Calculation
1000 ml of 8% amino acids

1000 ml x 8 g/100 ml = 80g

Practice Calculations

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