A hearing body’s decision not to eliminate a mandatory Provisional Suspension on account of the Athlete’s assertion regarding a Contaminated Product shall not be appealable.7.4.2 Optional Provisional Suspension Based on an Adverse Analytical Finding for Specified Substances, Specified Methods, Contaminated Products, or Other Anti-Doping Rule ViolationsA Signatory may adopt rules, applicable to any Event for which the Signatory is the ruling body or to any team selection process for which the Signatory is responsible or where the Signatory is the applicable International Federation or has Results Management authority over the alleged anti-doping rule violation, permitting Provisional Suspensions  to be imposed for anti-doping rule violations not covered by Article 7.4.1 prior to analysis of the Athlete’s B Sample or final hearing as described in Article 8 .World Anti-Doping Code 20211   PARTDoping Control587.4.3 Opportunity for Hearing or AppealNotwithstanding Articles 7.4.1 and 7.4.2, a Provisional Suspension may not be imposed unless the rules of the Anti-Doping Organization provide the Athlete or other Person with: (a) an opportunity for a Provisional Hearing, either before the imposition of the Provisional Suspension or on a timely basis after the imposition of the Provisional Suspension; or (b) an opportunity for an expedited hearing in accordance with Article 8 on a timely basis after imposition of a Provisional Suspension.