LOINCOrder

LOINC Code 101721-9: SARS-CoV-2 (COVID-19) NAA+probe (Resp)

101721-9 is a LOINC code used to identify SARS-CoV-2 (COVID-19) NAA+probe (Resp) 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 RNA. It is commonly used with the system or sample type Respiratory.

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 RNA. It is commonly used with the system or sample type Respiratory.

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: DEPRECATED
  • Order vs observation: Order
  • Panel type: Panel
  • Method: Probe.amp.tar

What it does not mean

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

Key facts

  • Deprecated SARS-CoV-2 (COVID-19) in Respiratory specimen by NAA with probe detection
  • SARS coronavirus 2 RNA
  • Qualitative and Quantitative assay for SARS-CoV-2 RNA using PCR method
  • 2019 Novel Coronavirus; 2019-nCoV; 3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; Corona virus; COVID19; COVID-19; DNA NUCLEIC ACID PROBE; DNA probe; II; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; PCR; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; Random; Ribonucleic acid; SARS Coronavirus 1; SARS-CoV; SARS-CoV-1; SARS-CoV-2; SDA; Severe Acute Respiratory Syndrome; 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) NAA+probe (Resp)Deprecated SARS-CoV-2 (COVID-19) in Respiratory specimen by NAA with probe detectionDeprecated SARS-CoV-2 Resp NAA+probeSARS coronavirus 2 RNAMICROSARS-CoV-2 (COVID-19), Respiratory-

Frequently asked questions

Code details

Code101721-9
SystemLOINC
Display nameSARS-CoV-2 (COVID-19) NAA+probe (Resp)
DescriptionSARS coronavirus 2 RNA
Short nameDeprecated SARS-CoV-2 Resp NAA+probe
ComponentSARS coronavirus 2 RNA
Property-
TimingPt
System (specimen)Respiratory
Scale-
MethodProbe.amp.tar
ClassMICRO
StatusDEPRECATED
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.75
Last changed2.76

Consumer names

SARS-CoV-2 (COVID-19), Respiratory

Part names

SARS coronavirus 2 RNA-PtRespiratoryProbe.amp.tarSARS-CoV-2 (COVID-19) RNAPoint in time (spot)Respiratory specimenNucleic 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.

LOINC Code 101721-9 | HealthAssure