The word haematolysis 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: 20
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (50 words)
aimless, aliases, amylase, ashiest, atheism, atlases, atomise, halites, hamlets, hastily, hatless, holiest, homiest, hostels, hostile, hyalite, isohels, isohyet, isolate, laytime, loathes, lysates, malaise, maltose, meatily, messiah, messily, methyls, mislays, misseat, mitoses, moistly, molests, motleys, oatmeal, salamis, seamost, smileys, somites, stomies, stylise, stylish, stymies, systole, tamales, thalami, theisms, toyless, tyloses, tylosis