did patient 25733 receive any mchc lab tests on the current hospital visit?
select count(*)>0 from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'mchc' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 25733 and admissions.dischtime is null )