instruction: what is the last lab test which was given to patient 30296?
response: SELECT d_labitems.label FROM d_labitems WHERE d_labitems.itemid IN (SELECT labevents.itemid FROM labevents WHERE labevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 30296) ORDER BY labevents.charttime DESC LIMIT 1)