###HUMAN: tell me the name of the last specimen test patient 26612 had received in 12/2102?, ###ASSISTANT: SELECT microbiologyevents.spec_type_desc FROM microbiologyevents WHERE microbiologyevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 26612) AND STRFTIME('%y-%m', microbiologyevents.charttime) = '2102-12' ORDER BY microbiologyevents.charttime DESC LIMIT 1