instruction: when was patient 006-227759 first tested at a laboratory until 10/2101?
response: SELECT lab.labresulttime FROM lab WHERE lab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '006-227759')) AND STRFTIME('%y-%m', lab.labresulttime) <= '2101-10' ORDER BY lab.labresulttime LIMIT 1