LOINCActiveBoth

LOINC Code 31388-2: Feline immunodeficiency virus Ab Qn (S)

31388-2 is a LOINC code used to identify Feline immunodeficiency virus Ab Qn (S) 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 Feline immunodeficiency virus Ab. 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 Feline immunodeficiency virus Ab. 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

What it does not mean

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

Key facts

  • Feline immunodeficiency virus Ab [Units/volume] in Serum
  • Feline immunodeficiency virus Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; FAIDS; FIV; FTLV; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; 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

Feline immunodeficiency virus Ab Qn (S)Feline immunodeficiency virus Ab [Units/volume] in SerumFIV Ab Ser-aCncFeline immunodeficiency virus AbMICROFeline Immunodeficiency virus antibody, BloodACnc

Frequently asked questions

Code details

Code31388-2
SystemLOINC
Display nameFeline immunodeficiency virus Ab Qn (S)
DescriptionFeline immunodeficiency virus Ab
Short nameFIV Ab Ser-aCnc
ComponentFeline immunodeficiency virus Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.69

Consumer names

Feline Immunodeficiency virus antibody, Blood

Part names

Feline immunodeficiency virus AbACncPtSerQnArbitrary ConcentrationPoint in time (spot)Serum

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.