Blood Run is Unsane's fifth studio album, released on April 26, 2005 through Relapse Records. It is the first album released by the group since their reformation in 2003.

Eduardo Rivadavia from Allmusic called it "a frightening place where every word uttered is a ragged scream, guitars clang against drums like hammers upon anvils, and unnerving shards of melody echo from standout tracks like 'Backslide', 'Killing Time', and 'Latch'" and "an excellent and surprisingly seamless addition to the band's canon."

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