The word erythropoietic 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: 24
Highest Scoring Words With Friends™ Play In The Letters erythropoietic
:
Seven Letter Word Alert: (43 words)
cheerio, chirper, coherer, coterie, critter, ecotype, eophyte, epicyte, epithet, erector, etheric, heretic, itchier, oophyte, percher, pettier, picrite, piercer, pitcher, pithier, porotic, portico, potiche, pottery, pricier, proctor, prootic, protect, pyritic, receipt, reciter, rectory, reperch, repitch, reprice, thereto, thorite, tiptoer, treetop, trochee, trooper, trophic, yperite