Can I Bring Biological specimens, non-infectious, in preservative solutions on a Plane to United States?
Biological specimens, non-infectious, in preservative solutions
Restrictions Apply
Special Rules Apply
According to TSA guidelines, the FAA has limits on preservative solution in checked baggage. No more than 30 ml of free liquid solution in each inner packaging and no more than one liter in the entire outer package. See FAA Regulations for more information.
The final decision rests with the TSA officer on whether an item is allowed through the checkpoint. Official TSA Rules →
Quick Rule
Under 3.4oz (100ml)
Allowed in carry-on
Over 3.4oz (100ml)
Must go in checked bag
Checked Baggage
Allowed in any size
Source: Official TSA Regulations ↗Updated: May 20, 2026
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