The word thyrocalcitonin is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 28
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (73 words)
aclinic, acrylic, actinic, acyloin, aircool, anionic, antlion, caloric, cannily, cannoli, cannolo, canonic, canonry, cartoon, cattily, chaotic, charily, chariot, charity, chicory, chitlin, chlorin, chorion, chronic, ciliary, citator, clarion, clarity, coactor, cochair, colicin, colonic, conical, contact, contain, contort, control, coolant, cornily, coronal, cottony, cotylar, cryonic, cynical, halcyon, haricot, laconic, locator, nattily, ninthly, nonclay, noncola, nonliar, nonoily, nonriot, notator, octarch, oncotic, oocytic, oolitic, oration, otolith, raccoon, rattoon, ricotta, tachyon, tacitly, tantric, throaty, tinhorn, tinnily, titanic, trinity