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 81305-5: FLUAV H1 2009 pand RNA NAA+probe (Respiratory system specimen) [ThreshNum]

Name: LOINC Code 81305-5: FLUAV H1 2009 pand RNA NAA+probe (Respiratory system specimen) [ThreshNum]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81305-5 is a LOINC code used to identify FLUAV H1 2009 pand RNA NAA+probe (Respiratory system specimen) [ThreshNum] 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 Influenza virus A H1 2009 pandemic RNA. 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 Influenza virus A H1 2009 pandemic RNA. 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: Both
Method: Probe.amp.tar

What it does not mean

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

Key facts

Influenza virus A H1 2009 pandemic RNA [Cycle Threshold #] in Respiratory system specimen by NAA with probe detection

Influenza virus A H1 2009 pandemic RNA

Possible specimens includeupper respiratory tract clinical specimens (including nasopharyngeal swabs, nasal swabs, throat swabs, nasal aspirates, nasal washes, and dual nasopharyngeal/throat swabs), and lower respiratory tract specimens (including bronchoalveolar lavage, bronchial wash, tracheal aspirate, sputum, and lung tissue.

3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; Avian influenza; Bird flu; Breathing; DNA NUCLEIC ACID PROBE; DNA probe; FLUA; FLUAV; FLUAV H1; FLUAV H1 2009 pand; FLUV; Fowl plague; H1N1; H1N1v; ID; Infectious Disease; InfectiousDisease; Influ; Influenza A; Influenza A virus; Influenza virus A hemagglutinin H1 swine origin; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Lung; Lungs; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; PCR; PH; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; Public Health; PublicHealth; Pulmonary; Pulmonology; QBR; QNT; Quan; Quant; Quantitative; Random; Respiratory; Ribonucleic acid; RS; SDA; S-OIV; Spec; Strand Displacement Amplification; TMA; Transcription mediated amplification

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

FLUAV H1 2009 pand RNA NAA+probe (Respiratory system specimen) [ThreshNum]Influenza virus A H1 2009 pandemic RNA [Cycle Threshold #] in Respiratory system specimen by NAA with probe detectionFLUAV H1 2009 pan RNA Ct Resp Qn NAA+prInfluenza virus A H1 2009 pandemic RNAMICROInfluenza A H1 2009 Pand, Respiratory system specimenThreshNum

Frequently asked questions

Code details

Code81305-5

SystemLOINC

Display nameFLUAV H1 2009 pand RNA NAA+probe (Respiratory system specimen) [ThreshNum]

DescriptionInfluenza virus A H1 2009 pandemic RNA

Short nameFLUAV H1 2009 pan RNA Ct Resp Qn NAA+pr

ComponentInfluenza virus A H1 2009 pandemic RNA

PropertyThreshNum

TimingPt

System (specimen)Respiratory System Specimen

ScaleQn

MethodProbe.amp.tar

ClassMICRO

Example unitsCt

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.75

Consumer names

Influenza A H1 2009 Pand, Respiratory system specimen

Part names

Influenza virus A H1 2009 pandemic RNAThreshNumPtRespiratory System SpecimenQnProbe.amp.tarPoint 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.