What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 95143-4: UGT1A1 gene TA repeats genotype Molgen (Bld/Tiss)

Name: LOINC Code 95143-4: UGT1A1 gene TA repeats genotype Molgen (Bld/Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:25.847Z

95143-4 is a LOINC code used to identify UGT1A1 gene TA repeats genotype Molgen (Bld/Tiss) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component UGT1A1 gene.TA repeats. It is commonly used with the system or sample type Bld/Tiss.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component UGT1A1 gene.TA repeats. It is commonly used with the system or sample type Bld/Tiss.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Both
Method: Molgen

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

UGT1A1 gene TA repeats [Genotype] in Blood or Tissue by Molecular genetics method Nominal

UGT1A1 gene.TA repeats

The patient's genotype (e.g. TA5/TA7) for the TA repeat variant within the UGT1A1 gene. Variants include TA5 or *36c.−41_-40delTA (g.234668893_234668894), TA7 or *28: c.−41_-40dupTA (g.234668893_234668894), and TA8 or *37: c.−43_-40dupTATA (g. 234668891_234668894). Testing is performed to screen for variants associated with increased risk of adverse drug reactions when taking UGT1A1-metabolized drugs, including pazopanib, nilotinib, atazanavir, and belinostat. Patient's homozygosity for the TA7 promoter variant (*28) have reduced UGT1A1 activity (about 30% to 50%) compared to normal.[PMID: 7565971]

BILIQTL1; Blood; Crigler-Najjar syndrome, type I; Genetics; Gilbert Syndrome; GNT1; Heredity; Heritable; HUG-BR1; Inherited; Ma2; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.PHARMG; Nominal; PCR; Point in time; Random; Repeat; Tissue; Tissue, unspecified; UDP glucuronosyltransferase 1 family, polypeptide A1; UDP glycosyltransferase 1 family, polypeptide A1 gene; UDPGT; UDPGT 1-1; UGT1; UGT1A; UGT1A1 TA; UGT1A5; WB; Whole blood; Whole blood or Tissue

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

UGT1A1 gene TA repeats genotype Molgen (Bld/Tiss)UGT1A1 gene TA repeats [Genotype] in Blood or Tissue by Molecular genetics method NominalUGT1A1 TA Geno Bld/TUGT1A1 gene.TA repeatsMOLPATH.PHARMGUGT1A1 gene TA Repeats genotype, Blood or tissue specimenGeno

Frequently asked questions

Code details

Code95143-4

SystemLOINC

Display nameUGT1A1 gene TA repeats genotype Molgen (Bld/Tiss)

DescriptionUGT1A1 gene.TA repeats

Short nameUGT1A1 TA Geno Bld/T

ComponentUGT1A1 gene.TA repeats

PropertyGeno

TimingPt

System (specimen)Bld/Tiss

ScaleNom

MethodMolgen

ClassMOLPATH.PHARMG

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.68

Last changed2.68

Consumer names

UGT1A1 gene TA Repeats genotype, Blood or tissue specimen

Part names

UGT1A1 gene.TA repeatsGenoPtBld/TissNomMolgenUGT1A1 gene TA repeatsGenotypePoint in time (spot)Blood or TissueMolecular genetics

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.