LOINCActiveBoth

LOINC Code 6635-7: FLUAV Eng Ab HAI Qn (S)

6635-7 is a LOINC code used to identify FLUAV Eng Ab HAI 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 Influenza virus A England 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 Influenza virus A England 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
  • Method: HAI

What it does not mean

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

Key facts

  • Influenza virus A England Ab [Units/volume] in Serum by Hemagglutination inhibition
  • Influenza virus A England Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Avian influenza; Bird flu; FLUA; FLUAV; FLUAV Eng; FLUV; Fowl plague; Hemagglutination inhibition; HI; ID; Infectious Disease; InfectiousDisease; Influ; Influenza A; Influenza A virus; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

FLUAV Eng Ab HAI Qn (S)Influenza virus A England Ab [Units/volume] in Serum by Hemagglutination inhibitionFLUAV Eng Ab Ser HAI-aCncInfluenza virus A England AbMICROInfluenza A Eng antibody, BloodACnc

Frequently asked questions

Code details

Code6635-7
SystemLOINC
Display nameFLUAV Eng Ab HAI Qn (S)
DescriptionInfluenza virus A England Ab
Short nameFLUAV Eng Ab Ser HAI-aCnc
ComponentInfluenza virus A England Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
MethodHAI
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0g
Last changed2.69

Consumer names

Influenza A Eng antibody, Blood

Part names

Influenza virus A England AbACncPtSerQnHAIArbitrary ConcentrationPoint in time (spot)SerumHemagglutination inhibition

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 6635-7 | HealthAssure