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Medical-Clinical Thermometer (Mercury)

Carry On Bags: No

Checked Bags: Yes (Special Instructions)

The FAA allows one small Medical-Clinical Thermometer (Mercury) per passenger for personal use in checked bag only.

The thermometer must be in a protective case.

Tip: Thermometers with a red line instead of silver are not mercury and not restricted. Digital thermometers are also not restricted, unless powered by lithium batteries. See FAA regulations for more information on quantity limits.

For more prohibited items, please go to the 'What Can I Bring?' page.

The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.