Query: What was the result of my last depression screening?, FHIR Resource: {'resourceType': 'Observation', 'status': 'final', 'category': [{'coding': [{'system': 'http://terminology.hl7.org/CodeSystem/observation-category', 'code': 'laboratory', 'display': 'Laboratory'}]}], 'code': {'coding': [{'system': 'http://loinc.org', 'code': '38483-4', 'display': 'Creatinine [Mass/volume] in Blood'}], 'text': 'Creatinine [Mass/volume] in Blood'}, 'subject': {'reference': 'urn:uuid:fe5ede7c-a259-11a8-bb0e-26c3c8415ce6'}, 'effectiveDateTime': '2015-10-18T23:29:38+05:30', 'valueQuantity': {'value': 1.18, 'unit': 'mg/dL', 'system': 'http://unitsofmeasure.org', 'code': 'mg/dL'}, 'interpretation': None}