LOINCActiveBoth

LOINC Code 59003-4: Lactoferrin Ab IA Qn (S)

59003-4 is a LOINC code used to identify Lactoferrin Ab IA 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 Lactoferrin Ab. 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 Lactoferrin Ab. 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

  • Lactoferrin Ab [Units/volume] in Serum by Immunoassay
  • Lactoferrin Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; Lf; MEIA; Point in time; QNT; Quan; Quant; Quantitative; Random; Serology; Serum; SR; SUDS

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

Lactoferrin Ab IA Qn (S)Lactoferrin Ab [Units/volume] in Serum by ImmunoassayLactoferrin Ab Ser IA-aCncLactoferrin AbSEROLactoferrin antibody, BloodACnc

Frequently asked questions

Code details

Code59003-4
SystemLOINC
Display nameLactoferrin Ab IA Qn (S)
DescriptionLactoferrin Ab
Short nameLactoferrin Ab Ser IA-aCnc
ComponentLactoferrin Ab
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
MethodIA
ClassSERO
Example unitsIndex
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.70

Consumer names

Lactoferrin antibody, Blood

Part names

Lactoferrin AbACncPtSerQnIAArbitrary ConcentrationPoint 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 59003-4 | HealthAssure