instruction: did patient 002-16314 undergo an vitamin b12 test until 11/2100?
response: SELECT COUNT(*) > 0 FROM lab WHERE lab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '002-16314')) AND lab.labname = 'vitamin b12' AND STRFTIME('%y-%m', lab.labresulttime) <= '2100-11'