At-Home In-Vitro Test Report
1.1.0 - STU 1.1

At-Home In-Vitro Test Report, published by HL7 International / Orders and Observations. This guide is not an authorized publication; it is the continuous build for version 1.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/home-lab-report/ and changes regularly. See the Directory of published versions

## Getting Started

RADx® MARS - Mobile At Home Reporting through Standards is an initiative aimed at providing guidance and resources for laboratories and healthcare facilities to rapidly implement and scale COVID-19 testing capabilities. One component of the RADx® MARS program is focused on HL7 version 2 (HL7v2) messaging, a widely used standard for healthcare data exchange.

### HL7 V2

Resources for HL7v2-based reporting can be found in the “Getting Started: HL7v2” page on the RADx® MARS website.

### FHIR

This implementation guide (IG) contains resources for FHIR-based reporting. It constrains the US Core Diagnostic Report for Laboratory Results and the US Core Laboratory Observation Profile for use in transmitting At-Home In-Vitro Test results to downstream health systems, including public health systems.

#### Patient-specific fields

Patient-related fields fall into two categories: (1) user profile (such as name, address, phone) and (2) test results. User profile fields should require a one-time entry by the individual user of the application. Test result fields need to be populated separately every time a test is taken.

#### Sender-specific fields

Sender-specific fields help to uniquely identify the sending application and are shown in the table below:

Sender-specific field | FHIR Element
--- | ---
Sending system OID | MessageHeader-at-home-in-vitro-test-results.source.endpoint
Sending facility name | MessageHeader-at-home-in-vitro-test-results.sender(US Core Organization.name)
Sending facility ID | MessageHeader-at-home-in-vitro-test-results.sender(US Core Organization.identifier)
Patient ID Assigner | Patient-at-home-in-vitro-test.identifier.system
Specimen ID Assigner OID | Specimen-at-home-in-vitro-test.identifier.system

The values of these fields will be provided by the Association of Public Health Laboratories (APHL) and will be unique to each application.

To request sender-specific field values for your organization and/or application, follow the link below:

- Sender-specific field values request form

To look up existing sender/receiver-specific field values, follow the link below:

- Sender/receiver-specific field values look up

#### Test-specific fields

Test-specific fields help to uniquely identify the type of test that is taken. A diagnostics company may manufacture different types of tests. Each type of test will have its own unique ID.

Test-specific fields are available in the CDC-published LOINC In Vitro Diagnostic (LIVD) Test Code Mapping spreadsheet. Any references to “LIVD Spreadsheet” within this FHIR IG are referring to the LIVD Test Code Mapping spreadsheet.

#### Receiver-specific fields

Receiving System | MessageHeader-at-home-in-vitro-test-results.destination.name | MessageHeader-at-home-in-vitro-test-results.destination.endpoint | MessageHeader-at-home-in-vitro-test-results.destination.receiver(US Core Organization.identifier.value) | MessageHeader-at-home-in-vitro-test-results.destination.receiver(US Core Organization.identifier.system) | MessageHeader-at-home-in-vitro-test-results.destination.receiver(US Core Organization.identifier.type)
--- | --- | --- | --- | --- | ---
APHL AIMS Testing | AIMS.INTEGRATION.STG | urn:oid:2.16.840.1.114222.4.3.15.2 | AIMS.PLATFORM | urn:oid:2.16.840.1.114222.4.1.217446 | ISO
APHL AIMS Production | AIMS.INTEGRATION.PRD | urn:oid:2.16.840.1.114222.4.3.15.1 | AIMS.PLATFORM | urn:oid:2.16.840.1.114222.4.1.217446 | ISO
ReportStream | CDC PRIME | urn:oid:2.16.840.1.114222.4.1.237821 | AIMS.PLATFORM | urn:oid:2.16.840.1.114222.4.1.237821 | ISO