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 33935-8: Cyclic citrullinated peptide IgG Qn

Name: LOINC Code 33935-8: Cyclic citrullinated peptide IgG Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

33935-8 is a LOINC code used to identify Cyclic citrullinated peptide IgG Qn 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 Cyclic citrullinated peptide Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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 Cyclic citrullinated peptide Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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

Cyclic citrullinated peptide IgG Ab [Units/volume] in Serum or Plasma
Cyclic citrullinated peptide Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Anti-CCP; Arbitrary concentration; Autoantibodies; Autoantibody; cCP; CCP3; Cyclic Citrulinated Peptide; Immune globulin G; Immunoglobulin G; Pept; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Rheum; Rheumatoid arthritis; Rheumatology; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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 Cyclic citrullinated peptide IgG Qn (33935-8)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Cyclic citrullinated peptide IgG QnCyclic citrullinated peptide IgG Ab [Units/volume] in Serum or PlasmacCP IgG SerPl-aCncCyclic citrullinated peptide Ab.IgGSEROCyclic citrullinated peptide IgG antibody, BloodACnc

Frequently asked questions

Code details

Code33935-8

SystemLOINC

Display nameCyclic citrullinated peptide IgG Qn

DescriptionCyclic citrullinated peptide Ab.IgG

Short namecCP IgG SerPl-aCnc

ComponentCyclic citrullinated peptide Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassSERO

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

Cyclic citrullinated peptide IgG antibody, Blood

Part names

Cyclic citrullinated peptide Ab.IgGACncPtSer/PlasQnCyclic Citrullinated Peptide IgGArbitrary ConcentrationPoint in time (spot)Serum or Plasma

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.