Hub Loss with Liquid Medications

When scripting out liquid medications, take HUB Loss into account when you calculate the quantity prescribed. Hub loss is the waste that resides in the tip of oral dosing syringes each time a dose is administered. To calculate the extra quantity of medication needed to offset this loss, a good rule of thumb is to add 5 – 10ml extra to the total quantity prescribed so that the medication lasts the desired amount of time.
Example: 0.5ml PO BID X 30 Days = 30ml + 5ml (Hub Loss) = 35ml for a 1 month supply

More info: UC Davis Young Scholars Program: Measuring and Predicting Syringe Hub Loss

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