By way of derogation from Article 12(2) of Regulation (EC) No 882/2004, the competent authority may designate a laboratory carrying out official testing for Trichinella and located in a slaughterhouse or a game handling establishment provided that, although not accredited in accordance with the European standard referred to in point (a) of that paragraph, the laboratory provides the competent authority with satisfactory guarantees that quality control schemes for the analyses of samples it conducts for the purpose of official controls are in place.