LOINCActiveBoth

LOINC Code 74304-7: PRRSV neut ab Neut test (S) [Titer]

74304-7 is a LOINC code used to identify PRRSV neut ab Neut test (S) [Titer] 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 Ab.Neut. It is commonly used with the system or sample type Ser.

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 Ab.Neut. It is commonly used with the system or sample type Ser.

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: Neut

What it does not mean

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

Key facts

  • PRRSV neutralizing antibody [Titer] in Serum by Neutralization test
  • Porcine reproductive and respiratory syndrome virus Ab.Neut
  • Quantitative result of porcine reproductive and respiratory syndrome virus (PRRSV)-neutralizing antibodies (NA) in serum. The submitter's lab performs a Fluorescent Focus Neutralization test.
  • Abortus blauw; ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Blue-eared pig disease; Conventional virus neutralization test; cVNT; Dilution factor; Dilution Factor (Titer); Lelystad virus; Microbiology; Mystery swine disease; NAb; NEUTRALIZATION; Neutralization test; NT; Point in time; Porcine epidemic abortion & respiratory syndrome; Porcine reproductive and respiratory syndrome; Pork; PRRS; PRRSV; PRRSV Ab; PRRSV Nab; Random; Serum; Serum virus neutralization; Seuchenhafter spatabort der schweine; SIRSV; SmQn; SR; SVN; Swine; Swine infertility and respiratory syndrome; Syndrome dysgenesique et respiratoire porcin; Titer; Titered; Titre; Ttr; Vet; Veterinary; Virus neutralization test; VNT

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 neut ab Neut test (S) [Titer]PRRSV neutralizing antibody [Titer] in Serum by Neutralization testPRRSV NAb Titr Ser NtPorcine reproductive and respiratory syndrome virus Ab.NeutMICROPRRSV neutralizing antibody, BloodTitr

Frequently asked questions

Code details

Code74304-7
SystemLOINC
Display namePRRSV neut ab Neut test (S) [Titer]
DescriptionPorcine reproductive and respiratory syndrome virus Ab.Neut
Short namePRRSV NAb Titr Ser Nt
ComponentPorcine reproductive and respiratory syndrome virus Ab.Neut
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodNeut
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.46
Last changed2.75

Consumer names

PRRSV neutralizing antibody, Blood

Part names

Porcine reproductive and respiratory syndrome virus Ab.NeutTitrPtSerSemiQnNeutPorcine reproductive and respiratory syndrome virus neutralizing antibodyTiterPoint in time (spot)SerumNeutralization test

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 74304-7 | HealthAssure