referral
noun [ C or U ] uk/rɪˈfɜː.rəl/ us/rɪˈfɝː.əl/
转诊;转介
the act of directing someone to a different place or person for information, help, or action, often to a person or group with more knowledge or power
The doctor gave him a referral to (= arranged for him to see) the consultant. 该医生将他转诊到会诊医师那里。