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 74316-1: PRRSV ORF5 gene RNA NAA+probe Ql (Specimen)

Name: LOINC Code 74316-1: PRRSV ORF5 gene RNA NAA+probe Ql (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:53.975Z

74316-1 is a LOINC code used to identify PRRSV ORF5 gene RNA NAA+probe Ql (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 Porcine reproductive and respiratory syndrome virus ORF5 gene RNA. 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 Porcine reproductive and respiratory syndrome virus ORF5 gene RNA. 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

PRRSV ORF5 gene RNA [Presence] in Specimen by NAA with probe detection

Porcine reproductive and respiratory syndrome virus ORF5 gene RNA

PCR-based methods are used to detected and isolate the ORF5 gene specific to the Porcine Reproductive and Respiratory Syndrome (PRRS) virus. The submitter's lab performs reverse transcriptase PCR on various specimens, including tissue, serum, oral fluid, and semen, to detect and isolated the ORF5 gene. PCR products are then used for sequencing [LOINC74310-4].

3 Self-Sustaining Sequence Replication; 3SR SR; Abortus blauw; Amplif; Amplification; Amplified; Blue-eared pig disease; DNA NUCLEIC ACID PROBE; DNA probe; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Lelystad virus; Ligase chain reaction; Ligation-activated transcription; Microbiology; Misc; Miscellaneous; Mystery swine disease; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Ordinal; Other; PCR; Point in time; Polymerase chain reaction; Porcine epidemic abortion & respiratory syndrome; Porcine reproductive and respiratory syndrome; Pork; PR; Probe amp; Probe with ampification; Probe with target amplification; PRRS; PRRSV; PRRSV ORF5 gene; QBR; QL; Qual; Qualitative; Random; Ribonucleic acid; Screen; SDA; Seuchenhafter spatabort der schweine; SIRSV; Spec; Strand Displacement Amplification; Swine; Swine infertility and respiratory syndrome; Syndrome dysgenesique et respiratoire porcin; TMA; To be specified in another part of the message; Transcription mediated amplification; Unspecified; Vet; Veterinary

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

PRRSV ORF5 gene RNA NAA+probe Ql (Specimen)PRRSV ORF5 gene RNA [Presence] in Specimen by NAA with probe detectionPRRSV ORF5 gene RNA Spec Ql NAA+probePorcine reproductive and respiratory syndrome virus ORF5 gene RNAMICROPRRSV ORF5 gene, SpecimenPrThr

Frequently asked questions

Code details

Code74316-1

SystemLOINC

Display namePRRSV ORF5 gene RNA NAA+probe Ql (Specimen)

DescriptionPorcine reproductive and respiratory syndrome virus ORF5 gene RNA

Short namePRRSV ORF5 gene RNA Spec Ql NAA+probe

ComponentPorcine reproductive and respiratory syndrome virus ORF5 gene RNA

PropertyPrThr

TimingPt

System (specimen)XXX

ScaleOrd

MethodProbe.amp.tar

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.46

Last changed2.69

Consumer names

PRRSV ORF5 gene, Specimen

Part names

Porcine reproductive and respiratory syndrome virus ORF5 gene RNAPrThrPtXXXOrdProbe.amp.tarPRRSV ORF5 gene RNAPresence or ThresholdPoint 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.