LOINCActiveBoth

LOINC Code 6638-1: FLUAV Tex Ab HAI Qn (S)

6638-1 is a LOINC code used to identify FLUAV Tex 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 Texas 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 Texas 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 Texas Ab [Units/volume] in Serum by Hemagglutination inhibition
  • Influenza virus A Texas Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Avian influenza; Bird flu; FLUA; FLUAV; FLUAV Tex; 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 Tex Ab HAI Qn (S)Influenza virus A Texas Ab [Units/volume] in Serum by Hemagglutination inhibitionFLUAV Tex Ab Ser HAI-aCncInfluenza virus A Texas AbMICROInfluenza A Tex antibody, BloodACnc

Frequently asked questions

Code details

Code6638-1
SystemLOINC
Display nameFLUAV Tex Ab HAI Qn (S)
DescriptionInfluenza virus A Texas Ab
Short nameFLUAV Tex Ab Ser HAI-aCnc
ComponentInfluenza virus A Texas 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 Tex antibody, Blood

Part names

Influenza virus A Texas 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 6638-1 | HealthAssure