(a) An application for an appeal of a laboratory service may be made by any interested party who is dissatisfied with the results of an analysis as stated in a certificate or laboratory report, if the lot of the commodity can be positively identified by the laboratory service as the lot from which originally drawn samples were previously analyzed.

(b) An application for an appeal of a laboratory service shall be made within thirty (30) days following the day on which the previous analysis was performed. However, upon approval by the Deputy Administrator, the filing time for an appeal application may be extended.