💧 3-1-1 Liquids Bag Checker Preset
Medically Necessary Liquids on a Plane: TSA Exemption Rules
Volume & Exemption Status
Medically Exempt — Permitted in Reasonable Quantities
Governed by international 100 ml (3.4 fl oz) LAGs regulations
🎗 Medically Exempt (Declare at Screening)
💧 3-1-1 液体规则单品速查
每位乘客限带一个 1 升透明拉链袋；每个容器标称容量必须在 100 毫升（3.4 盎司）或以下。
体积计算仅供参考 — 实际装载受容器几何形状影响。必需药品及婴儿食品属于豁免项（过检需声明）。 需要打包整袋液体？逐个规划您的容器 →
TSA & Aviation Security Rule Summary
Medically necessary liquids, gels, and aerosols (including insulin, liquid prescriptions, eye drops, saline, and enteral nutrition) are explicitly exempt from the 3-1-1 100 ml container limit in reasonable quantities for your itinerary. Declare them to the screener before X-ray.
Governing Standard: TSA Special Procedures & Title 14 CFR Part 382 TSA Disabilities and Medical Conditions Screening Protocol ↗
Related Verified Products
Frequently Asked Questions
Do I need a doctor letter to bring liquid medication over 100 ml?
A doctor letter is not strictly required by TSA for domestic US flights, but prescription pharmacy labels are strongly recommended to expedite screening.