Md. Rule 11-413
Rule 11-413. Response to Petition; Admission
(a) Response Permitted. A respondent served with a delinquency petition may file a response that admits or denies all or any facts alleged in the petition. Any written response shall be filed no later than 15 days prior to a scheduled adjudicatory or waiver hearing. Any allegation other than an allegation admitted in a written response is deemed denied.
(b) Admission.
(1) Advice by Court; Finding. Before the court accepts a respondent's admission or non-denial of the allegations, the court shall, on the record and in open court:
(A) advise the respondent of the nature and possible consequence of the admission or non-denial; and
(B) ascertain whether the admission or non-denial is knowing, intelligent, and voluntary.
(2) Withdrawal of Admission. In the interest of justice, the court may permit the respondent to withdraw an admission at any time before disposition.