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  1. Laboratory
  • Getting Started
    • Introduction
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    • Laboratory
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      • Observation Sexual Orientation
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        • Get Observations by Patient, Code, and Date
        • Get Observations by Patient, Code, and Date
    • Procedures
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        • Get Observation by ID
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        • Get Observations by Patient and Code
        • Get Observations by Patient, Category, and Date
        • Get Observations by Patient, Category, and Status
        • Get Observations by Patient, Code, and Date
  • Legal & Compliance
    • API Terms of Use
  1. Laboratory

Laboratory Result Observation

The Laboratory Results Observation resource represents individual laboratory test results for a patient and conforms to the US Core Laboratory Result Observation Profile (USCDI v1). Each Observation represents a single lab test, a panel with nested observations, or grouped measurements. It includes details such as test codes (usually LOINC), result values, units, and timestamps. These Observations are typically referenced by a DiagnosticReport resource for broader context.
This resource is based on the core FHIR Observation resource and includes important fields such as status, category (laboratory), code, subject (patient), effective date/time, result value, and optionally a reason if the value is missing.

📄 Get Observation by ID#

Method: GET
Endpoint: /Observation/{id}
Description: Retrieve a specific laboratory observation using its unique ID.

📄 Get Observations by Patient and Category#

Method: GET
Endpoint: /Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory
Description: Fetch all laboratory observations for a specific patient.

📄 Get Observations by Patient and Code#

Method: GET
Endpoint: /Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}
Description: Fetch laboratory observations for a patient filtered by specific observation codes.

📄 Get Observations by Patient, Category, and Date#

Method: GET
Endpoint: /Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}
Description: Fetch laboratory observations for a patient within a specified date range.

📄 Get Observations by Patient, Category, and Status#

Method: GET
Endpoint: /Observation?patient={Type/}[id]&category=http://terminology.hl7.org/CodeSystem/observation-category|laboratory&status={system|}[code]{,{system|}[code],...}
Description: Fetch laboratory observations for a patient filtered by observation status.

📄 Get Observations by Patient, Code, and Date#

Method: GET
Endpoint: /Observation?patient={Type/}[id]&code={system|}[code]{,{system|}[code],...}&date={gt|lt|ge|le}[date]{&date={gt|lt|ge|le}[date]&...}
Description: Fetch laboratory observations for a patient filtered by observation codes and date range.
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