LOINCActiveBoth

LOINC Code 104335-5: B. pertussis.pertussis toxin IgG spec 2 IA (S) [Titer]

104335-5 is a LOINC code used to identify B. pertussis.pertussis toxin IgG spec 2 IA (S) [Titer] 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^2nd 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 Bordetella pertussis.pertussis toxin Ab.IgG^2nd 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: ACTIVE
  • Order vs observation: Both
  • Method: IA

What it does not mean

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

Key facts

  • Bordetella pertussis.pertussis toxin IgG Ab [Titer] in Serum by Immunoassay --2nd specimen
  • Bordetella pertussis.pertussis toxin Ab.IgG^2nd specimen
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B pert; B pert.PT; B pert.PT Ab; B pert.PT IgG; B pertussis; Convalescent; Dilution factor; Dilution Factor (Titer); EIA; ELFA; ELISA; Enzyme immunoassay; IAA; Immune globulin G; Immunoglobulin G; MEIA; Microbiology; Pertussis; Point in time; Post immunization; PT; Random; Second; Serum; SmQn; sp2; Spec; SR; SUDS; Titer; Titered; Titre; Ttr; 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 spec 2 IA (S) [Titer]Bordetella pertussis.pertussis toxin IgG Ab [Titer] in Serum by Immunoassay --2nd specimenB pert.PT IgG sp2 Titr Ser IABordetella pertussis.pertussis toxin Ab.IgG^2nd specimenMICROBordetella pertussis.pertussis toxin IgG antibody specimen 2, BloodTitr

Frequently asked questions

Code details

Code104335-5
SystemLOINC
Display nameB. pertussis.pertussis toxin IgG spec 2 IA (S) [Titer]
DescriptionBordetella pertussis.pertussis toxin Ab.IgG^2nd specimen
Short nameB pert.PT IgG sp2 Titr Ser IA
ComponentBordetella pertussis.pertussis toxin Ab.IgG^2nd specimen
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
MethodIA
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.77
Last changed2.77

Consumer names

Bordetella pertussis.pertussis toxin IgG antibody specimen 2, Blood

Part names

Bordetella pertussis.pertussis toxin Ab.IgG^2nd specimenTitrPtSerSemiQnIATiterPoint 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.