A list of ingredients used to treat the intercept collection pad was sent to the customer.The list was reviewed by their employee since she has a sensitivity to preservatives.The employee stated that she avoids preservatives in large concentrations and that there were three suspect ingredients on the list: sodium benzoate, potassium sorbate, and sodium hydroxide.She stated that she does not encounter sodium hydroxide often and believes this ingredient to be the cause of her migraine.Her symptoms were resolved the same day they occurred.Device not returned to manufacturer.
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