LOINCObservation

LOINC Code 27435-7: S. pneumoniae 19 IgG spec 1 IA (S) [Mass/Vol]

27435-7 is a LOINC code used to identify S. pneumoniae 19 IgG spec 1 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 19 Ab.IgG^1st specimen. 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 19 Ab.IgG^1st specimen. 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 19 IgG Ab [Mass/volume] in Serum by Immunoassay --1st specimen
  • Streptococcus pneumoniae 19 Ab.IgG^1st specimen
  • ABS; Aby; Acute specimen; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; First; IAA; ID; 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; Pre immunization; QNT; Quan; Quant; Quantitative; Random; S pneum19; S pneumo; S pneumoniae; Serum; sp1; Spec; Spn; SR; Strep; Strept; Streptococcus pneumoniae 19f; 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 19 IgG spec 1 IA (S) [Mass/Vol]Deprecated Streptococcus pneumoniae 19 IgG Ab [Mass/volume] in Serum by Immunoassay --1st specimenDeprecated S pneum19 IgG sp1 Ser IA-mCncStreptococcus pneumoniae 19 Ab.IgG^1st specimenMICROStreptococcus pneumoniae 19 IgG antibody specimen 1, BloodMCnc

Frequently asked questions

Code details

Code27435-7
SystemLOINC
Display nameS. pneumoniae 19 IgG spec 1 IA (S) [Mass/Vol]
DescriptionStreptococcus pneumoniae 19 Ab.IgG^1st specimen
Short nameDeprecated S pneum19 IgG sp1 Ser IA-mCnc
ComponentStreptococcus pneumoniae 19 Ab.IgG^1st specimen
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 19 IgG antibody specimen 1, Blood

Part names

Streptococcus pneumoniae 19 Ab.IgG^1st specimenMCncPtSerQnIAMass 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.