what was the last laboratory test that patient 55247 received since 125 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 = 55247 ) and datetime(labevents.charttime) >= datetime(current_time,'-125 month') order by labevents.charttime desc limit 1 )