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.

LOINCActiveBoth

LOINC Code 49016-9: Streptococcus sp exoenzyme Ab Qn (S)

Name: LOINC Code 49016-9: Streptococcus sp exoenzyme Ab Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.170Z

49016-9 is a LOINC code used to identify Streptococcus sp exoenzyme Ab Qn (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 sp exoenzyme Ab. 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 sp exoenzyme Ab. 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 sp exoenzyme Ab [Units/volume] in Serum
Streptococcus sp exoenzyme Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; species; spp; SR; 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

Streptococcus sp exoenzyme Ab Qn (S)Streptococcus sp exoenzyme Ab [Units/volume] in SerumStreptococcus sp exoenzyme Ab Ser-aCncStreptococcus sp exoenzyme AbMICROStreptococcus species exoenzyme antibody, BloodACnc

Frequently asked questions

Code details

Code49016-9

SystemLOINC

Display nameStreptococcus sp exoenzyme Ab Qn (S)

DescriptionStreptococcus sp exoenzyme Ab

Short nameStreptococcus sp exoenzyme Ab Ser-aCnc

ComponentStreptococcus sp exoenzyme Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.73

Consumer names

Streptococcus species exoenzyme antibody, Blood

Part names

Streptococcus sp exoenzyme AbACncPtSerQnArbitrary 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.