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 33603-2: Bactericidal permeability increasing protein IgG Qn (S)

Name: LOINC Code 33603-2: Bactericidal permeability increasing protein IgG Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:21.182Z

33603-2 is a LOINC code used to identify Bactericidal permeability increasing protein IgG 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 Bactericidal permeability increasing protein 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 Bactericidal permeability increasing protein 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

Bactericidal permeability increasing protein IgG Ab [Units/volume] in Serum
Bactericidal permeability increasing protein Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; BPI; Immune globulin G; Immunoglobulin G; Point in time; PR; Prot; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR

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

Bactericidal permeability increasing protein IgG Qn (S)Bactericidal permeability increasing protein IgG Ab [Units/volume] in SerumBPI IgG Ser-aCncBactericidal permeability increasing protein Ab.IgGSEROBactericidal permeability increasing protein IgG antibody, BloodACnc

Frequently asked questions

Code details

Code33603-2

SystemLOINC

Display nameBactericidal permeability increasing protein IgG Qn (S)

DescriptionBactericidal permeability increasing protein Ab.IgG

Short nameBPI IgG Ser-aCnc

ComponentBactericidal permeability increasing protein Ab.IgG

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassSERO

Example unitsEIA units

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.73

Consumer names

Bactericidal permeability increasing protein IgG antibody, Blood

Part names

Bactericidal permeability increasing protein Ab.IgGACncPtSerQnBactericidal Permeability-Increasing Protein IgGArbitrary 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.