LOINCActiveBoth

LOINC Code 74766-7: B. pertussis.toxin 100 IgG Line blot Ql (S)

74766-7 is a LOINC code used to identify B. pertussis.toxin 100 IgG Line blot 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 Bordetella pertussis.pertussis toxin 100 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 100 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
  • Method: Line blot

What it does not mean

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

Key facts

  • Bordetella pertussis.pertussis toxin 100 IgG Ab [Presence] in Serum by Line blot
  • Bordetella pertussis.pertussis toxin 100 Ab.IgG
  • Bordetella pertussis immunoglobulin G (IgG) Pertussis Toxin 100 (PT100) in serum qualitation by immunoblot. The presence of the IgG PT 100 band is indicative of recent exposure to Bordetella pertussis. This term was created for, but not limited to use to, the Bordetella pertussis ViraStripe IgG, IgA test kit.
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B pert; B pert.PT; B pert.PT 100; B pert.PT 100 Ab; B pert.PT 100 IgG; B pertussis; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Pertussis; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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.toxin 100 IgG Line blot Ql (S)Bordetella pertussis.pertussis toxin 100 IgG Ab [Presence] in Serum by Line blotB pert.PT 100 IgG Ser Ql Line blotBordetella pertussis.pertussis toxin 100 Ab.IgGMICROBordetella pertussis.pertussis toxin 100 IgG antibody, BloodPrThr

Frequently asked questions

Code details

Code74766-7
SystemLOINC
Display nameB. pertussis.toxin 100 IgG Line blot Ql (S)
DescriptionBordetella pertussis.pertussis toxin 100 Ab.IgG
Short nameB pert.PT 100 IgG Ser Ql Line blot
ComponentBordetella pertussis.pertussis toxin 100 Ab.IgG
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodLine blot
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.48
Last changed2.73

Consumer names

Bordetella pertussis.pertussis toxin 100 IgG antibody, Blood

Part names

Bordetella pertussis.pertussis toxin 100 Ab.IgGPrThrPtSerOrdLine blotBordetella pertussis.pertussis toxin 100 IgGPresence 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 74766-7 | HealthAssure