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 85356-4: PEDV prototype strain S gene NAA+probe (Specimen) [ThreshNum]

Name: LOINC Code 85356-4: PEDV prototype strain S gene NAA+probe (Specimen) [ThreshNum]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:13.315Z

85356-4 is a LOINC code used to identify PEDV prototype strain S gene NAA+probe (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 Porcine epidemic diarrhea virus prototype strain S 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 Porcine epidemic diarrhea virus prototype strain S 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

PEDV prototype strain S gene [Cycle Threshold #] in Specimen by NAA with probe detection

Porcine epidemic diarrhea virus prototype strain S gene

Targeted PCR-based analysis of nucleic acids within the spike (S) gene specific to the prototype strain of the Porcine epidemic diarrhea virus (PEDV) and reported as a cross threshold (Ct) value. This assay is performed on various specimens, including fresh tissues (intestine), fluids (feces, intestinal content, oral fluid), fecal swabs, and other miscellaneous specimens (environmental, feed, feed pre-mix). This term was created for, but not limited in use to, the submitter's PEDV S gene Prototype differential PCR, which targets the highly conserved regions of the PEDV S gene in order to differentiate between the two strains of PEDV know to be circulating in North Americathe original US strain (US PEDV prototype), represented by this term, and the variant US strain (S INDEL variant) [LOINC: 85355-6].

3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; DNA NUCLEIC ACID PROBE; DNA probe; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; Misc; Miscellaneous; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Other; PCR; PEDv; PEDV proto S; Point in time; Polymerase chain reaction; Pork; Probe amp; Probe with ampification; Probe with target amplification; QBR; QNT; Quan; Quant; Quantitative; Random; S prime; SDA; Spec; Strand Displacement Amplification; Swine; 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

PEDV prototype strain S gene NAA+probe (Specimen) [ThreshNum]PEDV prototype strain S gene [Cycle Threshold #] in Specimen by NAA with probe detectionPEDV proto S Ct Spec Qn NAA+probePorcine epidemic diarrhea virus prototype strain S geneMICROPEDV Prototype Strain S gene, SpecimenThreshNum

Frequently asked questions

Code details

Code85356-4

SystemLOINC

Display namePEDV prototype strain S gene NAA+probe (Specimen) [ThreshNum]

DescriptionPorcine epidemic diarrhea virus prototype strain S gene

Short namePEDV proto S Ct Spec Qn NAA+probe

ComponentPorcine epidemic diarrhea virus prototype strain S gene

PropertyThreshNum

TimingPt

System (specimen)XXX

ScaleQn

MethodProbe.amp.tar

ClassMICRO

Example unitsCt

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.61

Last changed2.69

Consumer names

PEDV Prototype Strain S gene, Specimen

Part names

Porcine epidemic diarrhea virus prototype strain S geneThreshNumPtXXXQnProbe.amp.tarPEDV prototype strain S genePoint 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.