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.

LOINCActiveOrder

LOINC Code 104533-5: Immunoglobulin light chains.free panel

Name: LOINC Code 104533-5: Immunoglobulin light chains.free panel
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:18.506Z

104533-5 is a LOINC code used to identify Immunoglobulin light chains.free panel 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 Immunoglobulin light chains.free panel. 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 Immunoglobulin light chains.free panel. 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: Order
Panel type: Panel

What it does not mean

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

Key facts

Immunoglobulin light chains.free panel - Serum or Plasma
Immunoglobulin light chains.free panel
Bence Jones protein; BJ Protein; BJ Protein Free; BJP; Chain; Chemistry; FLC; FR; Immune globulin; Immuno; Immunoglob; Immunoglobin; Immunoglobulin LC free Pnl; Imunoglbon; Imunoglobn; Non-protein bound; Pan; PANEL.CHEMISTRY; Panl; Pl; Plasma; Plsm; Pnl; Point in time; Random; 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

Immunoglobulin light chains.free panelImmunoglobulin light chains.free panel - Serum or PlasmaImmunoglobulin LC free Pnl SerPlPANEL.CHEMFree light chains panel, Blood-Pt

Frequently asked questions

Code details

Code104533-5

SystemLOINC

Display nameImmunoglobulin light chains.free panel

Short nameImmunoglobulin LC free Pnl SerPl

ComponentImmunoglobulin light chains.free panel

Property-

TimingPt

System (specimen)Ser/Plas

Scale-

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.78

Last changed2.78

Consumer names

Free light chains panel, Blood

Part names

Immunoglobulin light chains.free panel-PtSer/PlasPoint in time (spot)Serum or Plasma

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.