Test Weight
What are test weights? | Before Test Weights | During Test Weights | After Test Weights | Additional Information | Contact us
What is a Test Weight?
Test weights, or before and after feeding weights, are used to measure breast milk intake for preterm infants or infants who are having difficulty with breastfeeding. The baby is weighed on a special electronic scale prior to breastfeeding. The scale is designed to measure breastmilk intake to 0.1 oz (2g). Your care provider will ask you not to change diapers or clothing until the test weights are completed. After feeding, the baby is weighed again and the difference between the weight measurements is used to determine how much milk the baby took from the breast. Repeated test weights are used to monitor how well your baby is doing in progression to full feedings at the breast. In some circumstances, parents will be taught how to perform test weights in the home.
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Before Test Weight
It is not necessary to undress your baby before the first weight measurement is done. However, your baby must be weighed with the same clothing or blankets after the feeding.
During Test Weight
Your baby will be placed on the scale for a pre-feeding weight. The weight is entered and saved in the scale's electronic memory. You will then be asked to feed your baby at the breast. When your baby is finished breastfeeding, another weight measurement will be taken. If your hospitalized baby is on a monitor, the monitor leads will be disconnected briefly while your baby is on the scale in order to obtain an accurate feeding volume measurement.
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After Test Weight
The scale automatically calculates the difference between the two weight measurements. This number in grams (g) equals the volume in milliliters (ml) of your baby's milk intake. Your care provider will tell you if your baby needs additional fluids based on his or her specific nutritional needs.
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Additional Information
Please see the home care health topic titled "In-Home Measurement" for instructions on performing a test weight in the home.
Contact us
For additional information on this or any Health Topic, please call the Family Resource Center, 513-636-7606, or your pediatrician.
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Rev. 4/06
