LOINCActiveBoth

LOINC Code 45136-9: Endomysium IgG Qn (S)

45136-9 is a LOINC code used to identify Endomysium IgG 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 Endomysium Ab.IgG. 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 Endomysium Ab.IgG. 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

  • Endomysium IgG Ab [Units/volume] in Serum
  • Endomysium Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; EMA; Endomysial; Gastro; Gastroenterology; GI; Immune globulin G; Immunoglobulin G; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR; Transglutaminase

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

Endomysium IgG Qn (S)Endomysium IgG Ab [Units/volume] in SerumEndomysium IgG Ser-aCncEndomysium Ab.IgGSEROEndomysium IgG antibody, BloodACnc

Frequently asked questions

Code details

Code45136-9
SystemLOINC
Display nameEndomysium IgG Qn (S)
DescriptionEndomysium Ab.IgG
Short nameEndomysium IgG Ser-aCnc
ComponentEndomysium Ab.IgG
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassSERO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.73

Consumer names

Endomysium IgG antibody, Blood

Part names

Endomysium Ab.IgGACncPtSerQnEndomysium IgGArbitrary 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.

LOINC Code 45136-9 | HealthAssure