DRD3 - Overview: Dopamine Receptor D3 Genotype

Test Catalog

Test Name

Test ID: DRD3    
Dopamine Receptor D3 Genotype

Useful For Suggests clinical disorders or settings where the test may be helpful

Influencing choice of antipsychotics prior to treatment, especially to ascertain if atypical antipsychotics may be used with low risk of tardive dyskinesia


Identifying those patients receiving antipsychotics who are at increased risk of developing tardive dyskinesias. Individuals with the 25G allele should be monitored closely for signs of tardive dyskinesia if a decision is made to treat with antipsychotics.


Testing may also be considered for individuals who will receive antipsychotic medications, if they are first-degree relatives of patients who have developed tardive dyskinesia.


Assessing potential for effective treatment response with clozapine, olanzapine, and risperidone

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.


Special Instructions and Forms Library of PDFs including pertinent information and consent forms, specimen collection and preparation information, test algorithms, and other information pertinent to test

Method Name A short description of the method used to perform the test

Polymerase Chain Reaction (PCR) Amplification with Allele-Specific Primer Extension (ASPE)

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

DRD3 Genotype

Aliases Lists additional common names for a test, as an aid in searching

Dopamine D3 Receptor
Dopamine Receptor Type 3
DRD3 Ser9Gly