1. Proofreading involves looking for mistakes of all types in the transcribed document and correcting them. The usual types of errors that occur include omitting important dic-tated words, selecting the wrong English or medical word, misspelling words, and making typographical, grammatical, or punctuation errors.
2. Medical transcriptionists should conscientiously look up all unfamiliar words and spellings. They should proofread on the screen as they are transcribing and always carry out a final proofing on the screen (or in hard copy if they have access to the printout), especially if there is not a pro-fessional proofreader reviewing the transcribed work.