This page is part of the HL7 Terminology (v5.2.0: Release) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions ![](external.png)
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<NamingSystem xmlns="http://hl7.org/fhir">
<id value="GTR"/>
<text>
<status value="generated"/>
<div xmlns="http://www.w3.org/1999/xhtml"><h3>Summary</h3><table class="grid"><tr><td>Defining URL</td><td>http://terminology.hl7.org/NamingSystem/GTR</td></tr><tr><td>Version</td><td>1.0.0</td></tr><tr><td>Name</td><td>GTR</td></tr><tr><td>Title</td><td>Genetic Testing Registry</td></tr><tr><td>Status</td><td>active</td></tr><tr><td>Definition</td><td><div><p>The Genetic Testing Registry (GTR) provides a central location for voluntary submission of genetic test information by providers. The scope includes the test's purpose, methodology, validity, evidence of the test's usefulness, and laboratory contacts and credentials. The overarching goal of the GTR is to advance the public health and research into the genetic basis of health and disease.</p>
<p>Each Test is a specific, orderable test from a particular laboratory, and is assigned a unique GTR accession number. The format is GTR00000001.1, with a leading prefix "GTR" followed by 8 digits, a period, then 1 or more digits representing the version. When a laboratory updates a registered test, a new version number is assigned.</p>
<p>To find all laboratories in GTR and all registered tests, see here https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=all%5Bsb%5D</p>
</div></td></tr><tr><td>Publisher</td><td>National Center for Biotechnology Information, U.S. National Library of Medicine</td></tr></table><h3>Identifiers</h3><table class="grid"><tr><td><b>Type</b></td><td><b>Value</b></td><td><b>Preferred</b></td><td><b>Period</b></td><td><b>Comment</b></td></tr><tr><td>URI</td><td>https://www.ncbi.nlm.nih.gov/gtr/</td><td>true</td><td>2021-01-27 --> (ongoing)</td><td>Official canonical URL going forward.</td></tr></table></div>
</text>
<extension
url="http://hl7.org/fhir/5.0/StructureDefinition/extension-NamingSystem.url">
<valueUri value="http://terminology.hl7.org/NamingSystem/GTR"/>
</extension>
<extension
url="http://hl7.org/fhir/5.0/StructureDefinition/extension-NamingSystem.version">
<valueString value="1.0.0"/>
</extension>
<extension
url="http://hl7.org/fhir/5.0/StructureDefinition/extension-NamingSystem.title">
<valueString value="Genetic Testing Registry"/>
</extension>
<name value="GTR"/>
<status value="active"/>
<kind value="codesystem"/>
<date value="2022-02-03T00:00:00-00:00"/>
<publisher
value="National Center for Biotechnology Information, U.S. National Library of Medicine"/>
<contact>
<name
value="National Center for Biotechnology Information, U.S. National Library of Medicine; 8600 Rockville Pike, Bethesda MD, 20894 USA"/>
<telecom>
<system value="url"/>
<value value="https://www.ncbi.nlm.nih.gov/"/>
</telecom>
</contact>
<description
value="The Genetic Testing Registry (GTR) provides a central location for voluntary submission of genetic test information by providers. The scope includes the test's purpose, methodology, validity, evidence of the test's usefulness, and laboratory contacts and credentials. The overarching goal of the GTR is to advance the public health and research into the genetic basis of health and disease.
Each Test is a specific, orderable test from a particular laboratory, and is assigned a unique GTR accession number. The format is GTR00000001.1, with a leading prefix "GTR" followed by 8 digits, a period, then 1 or more digits representing the version. When a laboratory updates a registered test, a new version number is assigned.
To find all laboratories in GTR and all registered tests, see here https://www.ncbi.nlm.nih.gov/gtr/all/tests/?term=all%5Bsb%5D"/>
<uniqueId>
<type value="uri"/>
<value value="https://www.ncbi.nlm.nih.gov/gtr/"/>
<preferred value="true"/>
<comment value="Official canonical URL going forward."/>
<period>
<start value="2021-01-27"/>
</period>
</uniqueId>
</NamingSystem>