Medically required liquids, such as medications, creams and breast milk, are permitted to be brought on board an aircraft. It is not necessary to place medically required liquids in a zip-top bag. However, travelers must tell the TSA officer at the beginning of the screening process that they wish to bring medically necessary liquids in excess of 3.4 ounces in their carry-on bag. Liquids, gels and aerosols are typically screened by X-ray and medically necessary items in excess of 3.4 ounces will receive additional screening.
Declaring Medically Necessary Liquids
Travelers who bring medically necessary liquids in excess of 3.4 ounces or medical accessories such as freezer packs, IV bags, pumps and syringes to the checkpoint must inform the TSA officer at the beginning of the screening process. TSA suggests, but does not require, medication be clearly labeled to facilitate the screening process. If a traveler does not want a medically necessary liquid to be X-rayed or opened for additional screening, the traveler must inform the officer before screening begins.