LOINCActiveBoth

LOINC Code 97766-0: IgG subclass 2 (Body fld) [Mass/Vol]

97766-0 is a LOINC code used to identify IgG subclass 2 (Body fld) [Mass/Vol] 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 IgG subclass 2. It is commonly used with the system or sample type Body fld.

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 IgG subclass 2. It is commonly used with the system or sample type Body fld.

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

  • IgG subclass 2 [Mass/volume] in Body fluid
  • IgG subclass 2
  • B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Chemistry; Fl; Fld; FLU; Fluid; IgG 2; IgG2; II; Immune globulin G; Immunoglobulin G; Immunoglobulin G subclass 2; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Subclasses

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

IgG subclass 2 (Body fld) [Mass/Vol]IgG subclass 2 [Mass/volume] in Body fluidIgG2 Fld-mCncIgG subclass 2CHEMIgG subclass 2, Body fluidMCnc

Frequently asked questions

Code details

Code97766-0
SystemLOINC
Display nameIgG subclass 2 (Body fld) [Mass/Vol]
DescriptionIgG subclass 2
Short nameIgG2 Fld-mCnc
ComponentIgG subclass 2
PropertyMCnc
TimingPt
System (specimen)Body fld
ScaleQn
ClassCHEM
Example unitsg/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.70
Last changed2.70

Consumer names

IgG subclass 2, Body fluid

Part names

IgG subclass 2MCncPtBody fldQnMass ConcentrationPoint in time (spot)Body fluid

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.