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.

LOINCActiveObservation

LOINC Code 94757-2: SARS-CoV-2 (COVID-19) N gene NAA+probe CDC primer-probe set N2 Ql (Respiratory system specimen)

Name: LOINC Code 94757-2: SARS-CoV-2 (COVID-19) N gene NAA+probe CDC primer-probe set N2 Ql (Respiratory system specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:24.123Z

94757-2 is a LOINC code used to identify SARS-CoV-2 (COVID-19) N gene NAA+probe CDC primer-probe set N2 Ql (Respiratory system 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 SARS coronavirus 2 N gene. It is commonly used with the system or sample type Respiratory System Specimen.

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 SARS coronavirus 2 N gene. It is commonly used with the system or sample type Respiratory System Specimen.

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: Observation
Method: Probe.amp.tar.CDC primer-probe set N2

What it does not mean

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

Key facts

SARS-CoV-2 (COVID-19) N gene [Presence] in Respiratory system specimen by Nucleic acid amplification using CDC primer-probe set N2

SARS coronavirus 2 N gene

Qualitative detection of nucleic acids within the N gene of SARS coronavirus 2 (SARS-CoV-2) in respiratory specimens by nucleic acid amplification with probe-based detection using the N2 primer-probe set developed by the Centers for Disease Control and Prevention (CDC). [CDCcoronavirus/COVID-19/lab/]

2019 Novel Coronavirus; 2019-nCoV; 3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; Breathing; Centers for Disease Control and Prevention; Corona virus; COVID19; COVID-19; DNA NUCLEIC ACID PROBE; DNA probe; ID; II; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Lungs; Microbiology; NAA N2; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Ordinal; PCR; Point in time; Polymerase chain reaction; PR; Probe amp; Probe with ampification; Probe with target amplification; QBR; QL; Qual; Qualitative; Random; RS; SARS Coronavirus 1; SARS-CoV; SARS-CoV-1; SARS-CoV-2; SARS-CoV-2 N gene; Screen; SDA; Severe Acute Respiratory Syndrome; Spec; Strand Displacement Amplification; TMA; Transcription mediated amplification; Viral Pneumonias; Wuhan coronavirus

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

SARS-CoV-2 (COVID-19) N gene NAA+probe CDC primer-probe set N2 Ql (Respiratory system specimen)SARS-CoV-2 (COVID-19) N gene [Presence] in Respiratory system specimen by Nucleic acid amplification using CDC primer-probe set N2SARS-CoV-2 N gene Resp Ql NAA N2SARS coronavirus 2 N geneMICROSARS-CoV-2 (COVID-19) N gene, Respiratory system specimenPrThr

Frequently asked questions

Code details

Code94757-2

SystemLOINC

Display nameSARS-CoV-2 (COVID-19) N gene NAA+probe CDC primer-probe set N2 Ql (Respiratory system specimen)

DescriptionSARS coronavirus 2 N gene

Short nameSARS-CoV-2 N gene Resp Ql NAA N2

ComponentSARS coronavirus 2 N gene

PropertyPrThr

TimingPt

System (specimen)Respiratory System Specimen

ScaleOrd

MethodProbe.amp.tar.CDC primer-probe set N2

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.68

Last changed2.75

Consumer names

SARS-CoV-2 (COVID-19) N gene, Respiratory system specimen

Part names

SARS coronavirus 2 N genePrThrPtRespiratory System SpecimenOrdProbe.amp.tar.CDC primer-probe set N2SARS-CoV-2 (COVID-19) N genePresence or ThresholdPoint in time (spot)Nucleic acid amplification using Centers for Disease Control and Prevention primer-probe set N2

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.