That's House's point. There's nothing diagnostic about it. He's trying to put the Patient in pain, force him to come in.
His guts just exploded. It might be a tad painful to make him eat.
Not fast enough. Not accurate enough.  Force-feed him wheat then do an endoscopy as it hits his duodenum. See if there's an allergic reaction.
Not fast enough. Not accurate enough.  Force-feed him wheat then do an endoscopy as it hits his duodenum. See if there's an allergic reaction. [SEP] His guts just exploded. It might be a tad painful to make him eat. [SEP] That's House's point. There's nothing diagnostic about it. He's trying to put the Patient in pain, force him to come in.