LEPTIN is a playable word

leptin Scrabble® Dictionary

noun
pl. leptins
a hormone released by fat cells
56 Playable Words can be made from "LEPTIN"
   2-Letter Words (11 found)
   3-Letter Words (21 found)
   4-Letter Words (18 found)
   5-Letter Words (4 found)
   6-Letter Words (2 found)