did the last serology/blood microbiology test of patient 8005 until 2104 show any organism?
select count(*)>0 from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 8005 ) and microbiologyevents.spec_type_desc = 'serology/blood' and microbiologyevents.org_name is not null and strftime('%y',microbiologyevents.charttime) <= '2104' order by microbiologyevents.charttime desc limit 1