LOINCActiveBoth

LOINC Code 44596-5: IgG Ag IF Ql (Skin)

44596-5 is a LOINC code used to identify IgG Ag IF Ql (Skin) 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 IgG Ag. It is commonly used with the system or sample type Skin.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 IgG Ag. It is commonly used with the system or sample type Skin.

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: IF

What it does not mean

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

Key facts

  • IgG Ag [Presence] in Skin by Immunofluorescence
  • IgG Ag
  • ACIF; Anticomplement Immunofluorescence; Antigen; Antigens; Dermatologic; DFA; Epidermis; FA; Fluorescent antibody; Fluoresent; IFA; Immune fluorescence; Immune globulin G; Immunoflour; Immunofluor; Immunofluorescence; Immunoglobulin G; Integument; Ordinal; PATHOLOGY; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Skn; Time Resolved Fluorescence; TRF

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

IgG Ag IF Ql (Skin)IgG Ag [Presence] in Skin by ImmunofluorescenceIgG Ag Skin Ql IFIgG AgPATHIgG antigen, SkinPrThr

Frequently asked questions

Code details

Code44596-5
SystemLOINC
Display nameIgG Ag IF Ql (Skin)
DescriptionIgG Ag
Short nameIgG Ag Skin Ql IF
ComponentIgG Ag
PropertyPrThr
TimingPt
System (specimen)Skin
ScaleOrd
MethodIF
ClassPATH
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.73

Consumer names

IgG antigen, Skin

Part names

IgG AgPrThrPtSkinOrdIFPresence or ThresholdPoint in time (spot)Immunofluorescence (IF)

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 44596-5 | HealthAssure