instruction: when was the last time patient 028-22327 received a hgb test in the laboratory since 01/2101?
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 = '028-22327')) AND lab.labname = 'hgb' AND STRFTIME('%y-%m', lab.labresulttime) >= '2101-01' ORDER BY lab.labresulttime DESC LIMIT 1