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.

LOINC

LOINC Code 27388-8: S. pneumoniae 26 IgG (S) [Mass/Vol]

Name: LOINC Code 27388-8: S. pneumoniae 26 IgG (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:14.571Z

27388-8 is a LOINC code used to identify S. pneumoniae 26 IgG (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 26 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 26 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

What it does not mean

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

Key facts

Deprecated Streptococcus pneumoniae 26 IgG Ab [Mass/volume] in Serum
Streptococcus pneumoniae 26 Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Level; Mass concentration; Microbiology; Pneu; pneum; Pneumo; Pneumococ; Pneumococcal; Pneumococcal pneumonia; Pneumococcus; Pneumon; Pneumonia; Point in time; QNT; Quan; Quant; Quantitative; Random; S pneum26; S pneumo; S pneumoniae; Serum; Spn; SR; Strep; Strept; Streptococcus pneumoniae 6b

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 26 IgG (S) [Mass/Vol]Deprecated Streptococcus pneumoniae 26 IgG Ab [Mass/volume] in SerumDeprecated S pneum26 IgG Ser-mCncStreptococcus pneumoniae 26 Ab.IgGMICROStreptococcus pneumoniae 26 IgG antibody, BloodMCnc

Frequently asked questions

Code details

Code27388-8

SystemLOINC

Display nameS. pneumoniae 26 IgG (S) [Mass/Vol]

DescriptionStreptococcus pneumoniae 26 Ab.IgG

Short nameDeprecated S pneum26 IgG Ser-mCnc

ComponentStreptococcus pneumoniae 26 Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

Example unitsug/mL

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.00

Last changed2.70

Consumer names

Streptococcus pneumoniae 26 IgG antibody, Blood

Part names

Streptococcus pneumoniae 26 Ab.IgGMCncPtSerQnStreptococcus pneumoniae 26 IgGMass 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.