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 33764-2: Shiga toxin stx gene NAA+probe Nom (Specimen)

Name: LOINC Code 33764-2: Shiga toxin stx gene NAA+probe Nom (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:21.184Z

33764-2 is a LOINC code used to identify Shiga toxin stx gene NAA+probe Nom (Specimen) 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 Shiga toxin stx gene. It is commonly used with the system or sample type XXX.

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 Shiga toxin stx gene. It is commonly used with the system or sample type XXX.

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: Probe.amp.tar

What it does not mean

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

Key facts

Shiga toxin stx gene [Identifier] in Specimen by NAA with probe detection

Shiga toxin stx gene

This term is used to report the detection of genes that encode Shiga toxin (produced by Shigella dysenteriae serotype 1) or Shiga-like toxin (produced by Escherichia coli, including E. coli O157H7). To report the result of an assay that only detects Shiga-like toxin genes (and not Shiga toxin gene), use a LOINC code with a Component specific for Shiga-like toxin gene(s), such as [LOINC: 81285-9].

3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; DNA NUCLEIC ACID PROBE; DNA probe; Identity or presence; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; Misc; Miscellaneous; NAA+probe; NAAT; NASBA; Nominal; Nucleic acid sequence based analysis; Other; PCR; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; Random; SDA; Shiga toxin gene; Spec; Strand Displacement Amplification; TMA; To be specified in another part of the message; Transcription mediated amplification; Unspecified

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

Shiga toxin stx gene NAA+probe Nom (Specimen)Shiga toxin stx gene [Identifier] in Specimen by NAA with probe detectionShiga toxin stx gene Spec NAA+probeShiga toxin stx geneMICROShiga toxin stx gene, SpecimenPrid

Frequently asked questions

Code details

Code33764-2

SystemLOINC

Display nameShiga toxin stx gene NAA+probe Nom (Specimen)

DescriptionShiga toxin stx gene

Short nameShiga toxin stx gene Spec NAA+probe

ComponentShiga toxin stx gene

PropertyPrid

TimingPt

System (specimen)XXX

ScaleNom

MethodProbe.amp.tar

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

Shiga toxin stx gene, Specimen

Part names

Shiga toxin stx genePridPtXXXNomProbe.amp.tarPresence or IdentityPoint in time (spot)Nucleic acid amplification with probe detection

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.