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.

LOINCObservation

LOINC Code 27228-6: S. pneumoniae 3 IgG IA (S) [Mass/Vol]

Name: LOINC Code 27228-6: S. pneumoniae 3 IgG IA (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:14.570Z

27228-6 is a LOINC code used to identify S. pneumoniae 3 IgG IA (S) [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 Streptococcus pneumoniae 3 Ab.IgG. 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 Streptococcus pneumoniae 3 Ab.IgG. 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: DEPRECATED
Order vs observation: Observation
Method: IA

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Deprecated Streptococcus pneumoniae 3 IgG Ab [Mass/volume] in Serum by Immunoassay
Streptococcus pneumoniae 3 Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; III; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Level; Mass concentration; MEIA; Microbiology; Pneu; pneum; Pneumo; Pneumococ; Pneumococcal; Pneumococcal pneumonia; Pneumococcus; Pneumon; Pneumonia; Point in time; QNT; Quan; Quant; Quantitative; Random; S pneum3; S pneumo; S pneumoniae; Serum; Spn; SR; Strep; Strept; SUDS

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

S. pneumoniae 3 IgG IA (S) [Mass/Vol]Deprecated Streptococcus pneumoniae 3 IgG Ab [Mass/volume] in Serum by ImmunoassayDeprecated S pneum3 IgG Ser IA-mCncStreptococcus pneumoniae 3 Ab.IgGMICROStreptococcus pneumoniae 3 IgG antibody, BloodMCnc

Frequently asked questions

Code details

Code27228-6

SystemLOINC

Display nameS. pneumoniae 3 IgG IA (S) [Mass/Vol]

DescriptionStreptococcus pneumoniae 3 Ab.IgG

Short nameDeprecated S pneum3 IgG Ser IA-mCnc

ComponentStreptococcus pneumoniae 3 Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassMICRO

Example unitsug/mL

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.70

Consumer names

Streptococcus pneumoniae 3 IgG antibody, Blood

Part names

Streptococcus pneumoniae 3 Ab.IgGMCncPtSerQnIAStreptococcus pneumoniae 3 IgGMass ConcentrationPoint in time (spot)SerumImmunoassay

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.