What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 11561-8: Acetylcholine receptor blocking Ab Qn (S)

Name: LOINC Code 11561-8: Acetylcholine receptor blocking Ab Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

11561-8 is a LOINC code used to identify Acetylcholine receptor blocking 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 Acetylcholine receptor blocking Ab. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Acetylcholine receptor blocking 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

Acetylcholine receptor blocking Ab [Units/volume] in Serum
Acetylcholine receptor blocking Ab
ABS; Aby; Acetylch; ACH; AChR; AChR Block; ACRA; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Neuro; Neurology; Point in time; QNT; Quan; Quant; Quantitative; Random; Rec; Recept; Receptors; Recp; Recptr; Serology; Serum; SR; UniversalLabOrders

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Acetylcholine receptor blocking Ab Qn (S) (11561-8)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Acetylcholine receptor blocking Ab Qn (S)Acetylcholine receptor blocking Ab [Units/volume] in SerumAChR Block Ab Ser-aCncAcetylcholine receptor blocking AbSEROAcetylcholine receptor blocking antibody, BloodACnc

Frequently asked questions

Code details

Code11561-8

SystemLOINC

Display nameAcetylcholine receptor blocking Ab Qn (S)

DescriptionAcetylcholine receptor blocking Ab

Short nameAChR Block Ab Ser-aCnc

ComponentAcetylcholine receptor blocking Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

Example units% inhibition

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.73

Consumer names

Acetylcholine receptor blocking antibody, Blood

Part names

Acetylcholine receptor blocking 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.