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Test Mnemonic NAT2 N-Acetyltransferase 2 Gene (NAT2), Full Gene Sequence

Reporting Name

NAT2, Full Gene Sequence

Useful For

Identifying patients who may require isoniazid dosing adjustments

Profile Information

Test ID Reporting Name Available Separately Always Performed
NAT2F NAT2, Full Gene Sequence No Yes
NAT2S NAT2, Gene Sequencing No Yes

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Whole Blood EDTA

Specimen Required

Multiple whole blood EDTA genotype tests can be performed on a single specimen after a single extraction. See Multiple Whole Blood EDTA Genotype Tests in Special Instructions for a list of tests that can be ordered together.


Container/Tube: Lavender top (EDTA)

Specimen Volume: 3 mL

Collection Instructions: Send specimen in original tube.

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood EDTA Ambient (preferred)

Reference Values

An interpretive report will be provided.

Day(s) and Time(s) Performed


Test Classification

This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

81479-Unlisted molecular pathology procedure

LOINC Code Information

Test ID Test Order Name Order LOINC Value
NAT2 NAT2, Full Gene Sequence In Process


Result ID Test Result Name Result LOINC Value
NAT2S NAT2, Gene Sequencing In Process
57009 NAT2 Full Gene Interpretation 69047-9
57010 Haplotype 1 No LOINC Needed
57011 Haplotype 2 No LOINC Needed
57012 Haplotype 3 No LOINC Needed
57013 Haplotype 4 No LOINC Needed
57014 111T>C No LOINC Needed
57015 190C>T No LOINC Needed
57016 191G>A No LOINC Needed
57017 282C>T No LOINC Needed
57018 341T>C No LOINC Needed
57019 364G>A No LOINC Needed
57020 411T>A No LOINC Needed
57021 434A>C No LOINC Needed
57022 481C>T No LOINC Needed
57023 499G>A No LOINC Needed
57024 590G>A No LOINC Needed
57025 759C>T No LOINC Needed
57026 803A>G No LOINC Needed
57027 845A>C No LOINC Needed
57028 857G>A No LOINC Needed
57029 859T>C/del No LOINC Needed
57031 Reviewed By 18771-6

Method Name

Polymerase Chain Reaction (PCR) Followed by DNA Sequence Analysis


1. New York Clients-Informed consent is required. Please document on the request form or electronic order that a copy is on file. An Informed Consent for Genetic Testing (T576) is available in Special Instructions.

2. If not ordering electronically, complete, print, and send a Pharmacogenomics Test Request Form (T797) with the specimen (