The people appeal as of right from the trial court’s dismissal of two charges against defendant of knowingly or intentionally possessing a controlled substance (pentazocine and methamphetamine), MCL 333.7403(2)(b); MSA 14.15(7403)(2)(b). We reverse and reinstate the charges.
Police officers arrested defendant on May 14, 1982, for possession of 200 tablets of pentazocine (Talwin) and 101 tablets of methamphetamine (Desoxyn), and on April 21, 1983, for possession of 295 Talwin tablets and 120 Desoxyn tablets. A district court magistrate bound defendant over as charged after preliminary examinations held on April 29, 1983, and May 4, 1983. The evidence at those examinations showed that defendant possessed the drugs in unmarked vials. No evidence was presented to show that defendant possessed those drugs under a doctor’s prescription.
At a pretrial conference on July 8, 1983, defense counsel moved to dismiss the charges arguing that defendant had valid prescriptions for the drugs he possessed when arrested. Counsel supported his *203argument with his own testimony that he had spoken with defendant’s treating physician, Dr. Brenda Ubom, and submitted a letter signed by Dr. Ubom. In that letter, written at defendant’s request, Dr. Ubom said that defendant had several chronic illnesses and that he was being treated with Talwin and Desoxyn, among other drugs. After reviewing the letter, the trial court dismissed the charges. The prosecutor objected, arguing that the validity of the prescriptions for defendant’s drugs was a question of fact for the trier of fact.
The prosecutor moved for reconsideration and requested an evidentiary hearing to establish the validity of the defendant’s prescriptions. Defense counsel argued that Dr. Ubom’s letter was not hearsay as it came within the business exception to the hearsay rule. MRE 803(6). The trial court denied the motion for reconsideration.
We agree with the people’s argument in this appeal that the procedure used following defendant’s motion to dismiss was improper. Defendant had two preliminary examinations at which the magistrate found probable cause to bind defendant over for trial. A reviewing court should not disturb that determination absent a demonstration of a clear abuse of discretion. People v Doss, 406 Mich 90, 101; 276 NW2d 9 (1979). In this case, defendant did not argue that the magistrate had abused her discretion by finding probable cause and the trial court did not so find. Indeed, the trial court could not have properly so found since there was no showing of such an abuse.
Instead, what effectively occurred in this case, on the basis of an oral motion to dismiss for which notice had not been filed, was a bench trial at which defense counsel testified as to hearsay evi*204dence and presented written hearsay evidence.1 Because of the nature of this evidence, the prosecutor did not have any opportunity to cross-examine.
If a magistrate must only consider evidence which is legally admissible before making a finding of probable cause, People v Kubasiak, 98 Mich App 529, 536; 296 NW2d 298 (1980), lv den 409 Mich 948 (1980), it makes no sense to allow a lesser evidentiary standard on a motion to dismiss. As the people argue, the proper procedure in this case would have been for the trial court to hold a formal evidentiary hearing at which Dr. Ubom could be present and at which defendant could present actual copies of his prescriptions to determine the validity of defendant’s proposed evidence of valid prescriptions for the number of tablets he possessed. In the alternative, the trial court should have denied defendant’s motion and encouraged defendant to present Dr. Ubom as a defense witness at trial.
Therefore, we reverse the dismissal of these charges, order the charges reinstated, and remand for proceedings consistent with this opinion.