what was the last test that patient 27465 had received since 100 months ago?
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 = 27465 ) and datetime(labevents.charttime) >= datetime(current_time,'-100 month') order by labevents.charttime desc limit 1 )