Serum may refer to:
Biology and Medicine
- Serum (blood), plasma from which the clotting proteins have been removed
- Antiserum, blood serum with specific antibodies for passive immunity
- Serous fluid, any clear bodily fluid
- Any drug derived from an animal's blood or serous fluid
Marketing and Popular culture
- Truth serum, a drug that is likely to make people tell the truth
- A buzzword for lotion in the cosmetics market
People
- Gary Serum (born 1956),
See also
- Sera (disambiguation)
- SIRUM (organization) (Supporting Initiatives to Redistribute Unused Medicine)