LOINCActiveBoth

LOINC Code 34661-9: Actin IgG Qn

34661-9 is a LOINC code used to identify Actin 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 Actin Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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 Actin 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

  • Actin IgG Ab [Units/volume] in Serum or Plasma
  • Actin Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Immune globulin G; Immunoglobulin G; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; 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.

Common synonyms

Actin IgG QnActin IgG Ab [Units/volume] in Serum or PlasmaActin IgG SerPl-aCncActin Ab.IgGSEROActin IgG antibody, BloodACnc

Frequently asked questions

Code details

Code34661-9
SystemLOINC
Display nameActin IgG Qn
DescriptionActin Ab.IgG
Short nameActin IgG SerPl-aCnc
ComponentActin 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 released2.11
Last changed2.73

Consumer names

Actin IgG antibody, Blood

Part names

Actin Ab.IgGACncPtSer/PlasQnActin 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.

LOINC Code 34661-9 | HealthAssure