An Illinois Expert Referral Order is a court order issued by the Circuit Court of the State of Illinois that allows a party to obtain the services of an expert witness. This type of order is used when the expert's testimony is necessary to aid the court in determining a legal dispute. There are two types of Illinois Expert Referral Order: limited and full. A limited order only allows for the expert to testify on a limited basis, and a full order allows for the expert to testify at a hearing or trial. The court will evaluate the type of expertise required and the amount of time needed before issuing the order.