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 17358-3: Neutrophil cytoplasmic Ab atypical Qn (S)

Name: LOINC Code 17358-3: Neutrophil cytoplasmic Ab atypical Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:26.981Z

17358-3 is a LOINC code used to identify Neutrophil cytoplasmic Ab atypical 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 Neutrophil cytoplasmic Ab.atypical. 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 Neutrophil cytoplasmic Ab.atypical. 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

Neutrophil Cytoplasmic Ab atypical [Units/volume] in Serum
Neutrophil cytoplasmic Ab.atypical
ACNA; ACPA; ANCA; Arbitrary Concentration; Atyp; Atyp ANCA; Cytopl; Cytoplas; Granulocyte ab; Granulocyte nucleus ab; Neut; Neutr; Neutrophils; PMN; PNM; Point in time; QNT; Quan; Quant; Quantitative; Random; Reactive; Serology; Serum; SR; UC-ANCA; Vasculitis; X-ANCA

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

Neutrophil cytoplasmic Ab atypical Qn (S)Neutrophil Cytoplasmic Ab atypical [Units/volume] in SerumAtyp ANCA Ser-aCncNeutrophil cytoplasmic Ab.atypicalSERONeutrophil Cytoplasmic Ab Atypical, BloodACnc

Frequently asked questions

Code details

Code17358-3

SystemLOINC

Display nameNeutrophil cytoplasmic Ab atypical Qn (S)

DescriptionNeutrophil cytoplasmic Ab.atypical

Short nameAtyp ANCA Ser-aCnc

ComponentNeutrophil cytoplasmic Ab.atypical

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.73

Consumer names

Neutrophil Cytoplasmic Ab Atypical, Blood

Part names

Neutrophil cytoplasmic Ab.atypicalACncPtSerQnNeutrophil Cytoplasmic Ab atypicalArbitrary 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.