LOINCActiveBoth

LOINC Code 31968-1: S. pneumoniae Ag Ql (Sput)

31968-1 is a LOINC code used to identify S. pneumoniae Ag Ql (Sput) 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 Ag. It is commonly used with the system or sample type Sputum.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Ag. It is commonly used with the system or sample type Sputum.

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

  • Streptococcus pneumoniae Ag [Presence] in Sputum
  • Streptococcus pneumoniae Ag
  • Antigen; Antigens; ID; Infectious Disease; InfectiousDisease; Lower respiratory; Lung; Microbiology; Ordinal; Pneu; pneum; Pneumo; Pneumococ; Pneumococcal; Pneumococcal pneumonia; Pneumococcus; Pneumon; Pneumonia; Point in time; PR; Pulmonary; Pulmonology; Ql; Qual; Qualitative; Random; Respiratory; S pneumo; S pneumoniae; Screen; Spn; Spt; Sputum; Strep; Strept

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 Ag Ql (Sput)Streptococcus pneumoniae Ag [Presence] in SputumS pneum Ag Spt QlStreptococcus pneumoniae AgMICROStreptococcus pneumoniae antigen, SputumPrThr

Frequently asked questions

Code details

Code31968-1
SystemLOINC
Display nameS. pneumoniae Ag Ql (Sput)
DescriptionStreptococcus pneumoniae Ag
Short nameS pneum Ag Spt Ql
ComponentStreptococcus pneumoniae Ag
PropertyPrThr
TimingPt
System (specimen)Sputum
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.56

Consumer names

Streptococcus pneumoniae antigen, Sputum

Part names

Streptococcus pneumoniae AgPrThrPtSputumOrdPresence or ThresholdPoint in time (spot)

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 31968-1 | HealthAssure