ɪf ɐ pˈeɪʃənt hɐz ˈɛvɚ tˈeɪkən ɪtɹˈɛtᵻnˌeɪt, ðeɪ ɑːɹ nˌɑːt ˈɛlɪdʒəbəl tə doʊnˈeɪt blˈʌd ɪnðə juːnˈaɪɾᵻd stˈeɪts, ðə juːnˈaɪɾᵻd kˈɪŋdəm, ˈaɪɚlənd ɔːɹ kwᵻbˈɛk, dˈuː tə ðə ɹˈɪsk ʌv bˈɜːθ dˈiːfɛkts.
If a patient has ever taken etretinate, they are not eligible to donate blood in the United States, the United Kingdom, Ireland or Québec, due to the risk of birth defects.