are any organisms found until 09/2102 in the first catheter tip-iv test of patient 28484?
select count(*)>0 from microbiologyevents where microbiologyevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 28484 ) and microbiologyevents.spec_type_desc = 'catheter tip-iv' and microbiologyevents.org_name is not null and strftime('%y-%m',microbiologyevents.charttime) <= '2102-09' order by microbiologyevents.charttime asc limit 1