nˈɔːɹθfiːldz ˈoʊnli pɹˈɑːdʌkt wʌz pˈɑːli hˈiːm, ɐn ˈɑːksɪdʒəŋkˈæɹiɪŋ blˈʌd sˈʌbstɪtˌuːt, wˌɪtʃ fˈeɪld tə ɹᵻsˈiːv fˈuːd ænd dɹˈʌɡ ɐdmˌɪnɪstɹˈeɪʃən ˌɛfdˌiːˈeɪ ɹˈɛɡjʊlətˌoːɹi ɐpɹˈuːvəl.
Northfield's only product was PolyHeme, an oxygen-carrying blood substitute, which failed to receive Food and Drug Administration (FDA) regulatory approval.