North Carolina General Statutes Chapter 15A. Criminal Procedure Act § 15A-273. Basis for order

(1) That there is probable cause to believe that a felony offense, or a Class A1 or Class 1 misdemeanor offense has been committed;

(2) That there are reasonable grounds to suspect that the person named or described in the affidavit committed the offense;  and

(3) That the results of specific nontestimonial identification procedures will be of material aid in determining whether the person named in the affidavit committed the offense.