SERUMS is a playable word

serum Scrabble® Dictionary

noun
pl. serums or sera
the watery portion of whole blood
(adjective) serumal
48 Playable Words can be made from "SERUMS"
   2-Letter Words (8 found)
   3-Letter Words (15 found)
   4-Letter Words (16 found)
   5-Letter Words (7 found)
   6-Letter Words (2 found)