LOINCActiveOrder

LOINC Code 57778-3: Immunoglobulin light chains.free panel (S)

57778-3 is a LOINC code used to identify Immunoglobulin light chains.free panel (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 Immunoglobulin light chains.free panel. 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 Immunoglobulin light chains.free panel. 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: 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
  • 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; Pnl; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; UniversalLabOrders

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 panel (S)Immunoglobulin light chains.free panel - SerumImmunoglobulin LC free Pnl SerImmunoglobulin light chains.free panelPANEL.CHEMFree light chains panel, Blood-

Frequently asked questions

Code details

Code57778-3
SystemLOINC
Display nameImmunoglobulin light chains.free panel (S)
DescriptionImmunoglobulin light chains.free panel
Short nameImmunoglobulin LC free Pnl Ser
ComponentImmunoglobulin light chains.free panel
Property-
TimingPt
System (specimen)Ser
ScaleQn
ClassPANEL.CHEM
StatusACTIVE
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Free light chains panel, Blood

Part names

Immunoglobulin light chains.free panel-PtSerQnPoint 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.

LOINC Code 57778-3 | HealthAssure