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 99475-6: P. frequentans IgG (S) [Mass/Vol]

Name: LOINC Code 99475-6: P. frequentans IgG (S) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:33.065Z

99475-6 is a LOINC code used to identify P. frequentans 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 Penicillium frequentans 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 Penicillium frequentans 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

Penicillium frequentans IgG Ab [Mass/volume] in Serum
Penicillium frequentans Ab.IgG
ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Immune globulin G; Immunoglobulin G; Level; m209; Mass concentration; P frequentans; Point in time; QNT; Quan; Quant; Quantitative; Random; Rm209; 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

P. frequentans IgG (S) [Mass/Vol]Penicillium frequentans IgG Ab [Mass/volume] in SerumP frequentans IgG-mCncPenicillium frequentans Ab.IgGALLERGYPenicillium frequentans IgG antibodyMCnc

Frequently asked questions

Code details

Code99475-6

SystemLOINC

Display nameP. frequentans IgG (S) [Mass/Vol]

DescriptionPenicillium frequentans Ab.IgG

Short nameP frequentans IgG-mCnc

ComponentPenicillium frequentans Ab.IgG

PropertyMCnc

TimingPt

System (specimen)Ser

ScaleQn

ClassALLERGY

Example unitsmg/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Penicillium frequentans IgG antibody

Part names

Penicillium frequentans Ab.IgGMCncPtSerQnMass 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.