LOINCActiveBoth

LOINC Code 31970-7: S. pyogenes Ag Ql (S)

31970-7 is a LOINC code used to identify S. pyogenes Ag Ql (S) 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 pyogenes Ag. It is commonly used with the system or sample type Ser.

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 pyogenes Ag. 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: ACTIVE
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Streptococcus pyogenes Ag [Presence] in Serum
  • Streptococcus pyogenes Ag
  • Antigen; Antigens; GAS; Group A Strep; ID; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; S pyogenes; Screen; Serum; SR; Steptococcus Group A; Strep; Strept; Streptococci group A; Streptococcus group A

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. pyogenes Ag Ql (S)Streptococcus pyogenes Ag [Presence] in SerumS pyo Ag Ser QlStreptococcus pyogenes AgMICROStreptococcus pyogenes antigen, BloodPrThr

Frequently asked questions

Code details

Code31970-7
SystemLOINC
Display nameS. pyogenes Ag Ql (S)
DescriptionStreptococcus pyogenes Ag
Short nameS pyo Ag Ser Ql
ComponentStreptococcus pyogenes Ag
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Streptococcus pyogenes antigen, Blood

Part names

Streptococcus pyogenes AgPrThrPtSerOrdPresence or ThresholdPoint 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.

LOINC Code 31970-7 | HealthAssure