LOINCActiveBoth

LOINC Code 29658-2: B. pertussis IgM IA Ql (S)

29658-2 is a LOINC code used to identify B. pertussis IgM IA 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 Ab.IgM. 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 Ab.IgM. 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 IgM Ab [Presence] in Serum by Immunoassay
  • Bordetella pertussis Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B pert; B pertussis; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Ordinal; Pertussis; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; SUDS; 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 IgM IA Ql (S)Bordetella pertussis IgM Ab [Presence] in Serum by ImmunoassayB pert IgM Ser Ql IABordetella pertussis Ab.IgMMICROBordetella pertussis IgM antibody, BloodPrThr

Frequently asked questions

Code details

Code29658-2
SystemLOINC
Display nameB. pertussis IgM IA Ql (S)
DescriptionBordetella pertussis Ab.IgM
Short nameB pert IgM Ser Ql IA
ComponentBordetella pertussis Ab.IgM
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.03
Last changed2.73

Consumer names

Bordetella pertussis IgM antibody, Blood

Part names

Bordetella pertussis Ab.IgMPrThrPtSerOrdIABordetella pertussis IgMPresence or ThresholdPoint 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.

LOINC Code 29658-2 | HealthAssure