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 73018-4: Furosemide induced neutrophil IgG FC Ql

Name: LOINC Code 73018-4: Furosemide induced neutrophil IgG FC Ql
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:52.634Z

73018-4 is a LOINC code used to identify Furosemide induced neutrophil IgG FC Ql 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 Furosemide induced neutrophil Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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 Furosemide induced neutrophil Ab.IgG. It is commonly used with the system or sample type Ser/Plas.

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: Flow cytometry

What it does not mean

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

Key facts

Furosemide induced neutrophil IgG Ab [Presence] in Serum or Plasma by Flow cytometry (FC)
Furosemide induced neutrophil Ab.IgG
(neut) Ab; (neut) IgG; ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; c210; Dynamic; FC; Furj; Granulocytic Ab; Immune globulin G; Immunoglobulin G; LASIX; LASJ; Neut; Neutr; Neutrophils; Ordinal; Pl; Plasma; Plsm; PMN; PNM; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

Furosemide induced neutrophil IgG FC QlFurosemide induced neutrophil IgG Ab [Presence] in Serum or Plasma by Flow cytometry (FC)Furosemide (neut) IgG SerPl Ql FCFurosemide induced neutrophil Ab.IgGSEROFurosemide induced neutrophil IgG, BloodPrThr

Frequently asked questions

Code details

Code73018-4

SystemLOINC

Display nameFurosemide induced neutrophil IgG FC Ql

DescriptionFurosemide induced neutrophil Ab.IgG

Short nameFurosemide (neut) IgG SerPl Ql FC

ComponentFurosemide induced neutrophil Ab.IgG

PropertyPrThr

TimingPt

System (specimen)Ser/Plas

ScaleOrd

MethodFlow cytometry

ClassSERO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.44

Last changed2.56

Consumer names

Furosemide induced neutrophil IgG, Blood

Part names

Furosemide induced neutrophil Ab.IgGPrThrPtSer/PlasOrdFlow cytometryFurosemide induced neutrophil IgGPresence or ThresholdPoint in time (spot)Serum or PlasmaFlow cytometry (FC)

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.