LOINCActiveObservation

LOINC Code 74310-4: PRRSV strain Sequencing Nom (Isol)

74310-4 is a LOINC code used to identify PRRSV strain Sequencing Nom (Isol) 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 strain. It is commonly used with the system or sample type Isolate.

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 strain. It is commonly used with the system or sample type Isolate.

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: Sequencing

What it does not mean

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

Key facts

  • PRRSV strain [Identifier] in Isolate by Sequencing
  • Porcine reproductive and respiratory syndrome virus strain
  • PRRSV strain identified (e.g. IngelvacMLV like Wild Type) in isolate by sequencing. The submitter's lab performs reverse transcriptase PCR on various specimens, including tissue, serum, oral fluid, and semen, to detect and isolate the ORF5 gene. PCR products are then used for sequencing and identifying the PRRSV strain.
  • Abortus blauw; Blue-eared pig disease; high-throughput sequencing; HTS; Identity or presence; Islt; Isol; Lelystad virus; Microbiology; Mystery swine disease; Next generation sequencing; NGS; Nominal; Point in time; Porcine epidemic abortion & respiratory syndrome; Porcine reproductive and respiratory syndrome; Pork; PRRS; PRRSV; PRRSV strain; Random; Seuchenhafter spatabort der schweine; SIRSV; Swine; Swine infertility and respiratory syndrome; Syndrome dysgenesique et respiratoire porcin; 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 strain Sequencing Nom (Isol)PRRSV strain [Identifier] in Isolate by SequencingPRRSV strain Islt SeqPorcine reproductive and respiratory syndrome virus strainMICROPRRSV strainPrid

Frequently asked questions

Code details

Code74310-4
SystemLOINC
Display namePRRSV strain Sequencing Nom (Isol)
DescriptionPorcine reproductive and respiratory syndrome virus strain
Short namePRRSV strain Islt Seq
ComponentPorcine reproductive and respiratory syndrome virus strain
PropertyPrid
TimingPt
System (specimen)Isolate
ScaleNom
MethodSequencing
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.46
Last changed2.81

Consumer names

PRRSV strain

Part names

Porcine reproductive and respiratory syndrome virus strainPridPtIsolateNomSequencingPRRSV strainPresence or IdentityPoint in time (spot)

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 74310-4 | HealthAssure