# How to Calculate Percentages in IV Fluids

Written by brandy alexander
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Knowing the percentages of pharmaceuticals in an intravenous solution can be critically important when administering, preparing and taking such medicines. To calculate the percentages of ingredients in IV fluids, you first need to know how much of each is present, in the same units. With a calculator and a formula, anyone can determine the percentage of any ingredient in pretty much anything. Knowing the percentage of an element in a solution is not the same as knowing its quantity.

Skill level:
Moderately Easy

• Calculator

## Instructions

1. 1

Add up all the ingredients of the solution. All of the ingredients must be in the same units of measure. For example, 28.4gr coffee plus 227gr water equals 255gr.

2. 2

Divide the ingredient that you want to know the percentage of by the total quantity. For example, 28.4gr coffee divided by 255gr in total equals 0.11.

3. 3

Multiply this number by 100 to get the percentage that particular element takes up in the solution. For example, 0.11 x 100 = 11 per cent, therefore, pure coffee takes up 11 per cent of the entire cup of coffee.

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