LOINCActiveBoth

LOINC Code 33268-4: B. pertussis.pertussis toxin IgG (S) [Mass/Vol]

33268-4 is a LOINC code used to identify B. pertussis.pertussis toxin 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 Bordetella pertussis.pertussis toxin 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 Bordetella pertussis.pertussis toxin 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: ACTIVE
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Bordetella pertussis.pertussis toxin IgG Ab [Mass/volume] in Serum
  • Bordetella pertussis.pertussis toxin Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B pert; B pert.PT; B pert.PT Ab; B pert.PT IgG; B pertussis; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Level; Mass concentration; Microbiology; Pertussis; Point in time; PT; QNT; Quan; Quant; Quantitative; Random; Serum; SR; Whooping cough

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

B. pertussis.pertussis toxin IgG (S) [Mass/Vol]Bordetella pertussis.pertussis toxin IgG Ab [Mass/volume] in SerumB pert.PT IgG Ser-mCncBordetella pertussis.pertussis toxin Ab.IgGMICROBordetella pertussis.pertussis toxin IgG antibody, BloodMCnc

Frequently asked questions

Code details

Code33268-4
SystemLOINC
Display nameB. pertussis.pertussis toxin IgG (S) [Mass/Vol]
DescriptionBordetella pertussis.pertussis toxin Ab.IgG
Short nameB pert.PT IgG Ser-mCnc
ComponentBordetella pertussis.pertussis toxin Ab.IgG
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassMICRO
Example unitsug/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.70

Consumer names

Bordetella pertussis.pertussis toxin IgG antibody, Blood

Part names

Bordetella pertussis.pertussis toxin Ab.IgGMCncPtSerQnBordetella pertussis.pertussis toxin 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.

LOINC Code 33268-4 | HealthAssure