when did patient 80119 receive bicarbonate test the first time until 03/2105?
select labevents.charttime from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'bicarbonate' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 80119 ) and strftime('%y-%m',labevents.charttime) <= '2105-03' order by labevents.charttime asc limit 1