LOINCActiveBoth

LOINC Code 40604-1: Alpha-2-Macroglobulin IEP Ql (U)

40604-1 is a LOINC code used to identify Alpha-2-Macroglobulin IEP Ql (U) 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 Alpha-2-Macroglobulin. It is commonly used with the system or sample type Urine.

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 Alpha-2-Macroglobulin. It is commonly used with the system or sample type Urine.

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: Immunoelectrophoresis

What it does not mean

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

Key facts

  • Alpha-2-Macroglobulin [Presence] in Urine by Immunoelectrophoresis
  • Alpha-2-Macroglobulin
  • A2; A2 Macroglob; Alfa; AMG; Chemistry; IEP; II; Imm elect; Immunoelect; Macroglob; Macroglobn; Macroglobulins; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; UA; UR; Urn

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

Alpha-2-Macroglobulin IEP Ql (U)Alpha-2-Macroglobulin [Presence] in Urine by ImmunoelectrophoresisA2 Macroglob Ur Ql IEPAlpha-2-MacroglobulinCHEMAlpha-2-Macroglobulin, UrinePrThr

Frequently asked questions

Code details

Code40604-1
SystemLOINC
Display nameAlpha-2-Macroglobulin IEP Ql (U)
DescriptionAlpha-2-Macroglobulin
Short nameA2 Macroglob Ur Ql IEP
ComponentAlpha-2-Macroglobulin
PropertyPrThr
TimingPt
System (specimen)Urine
ScaleOrd
MethodImmunoelectrophoresis
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.56

Consumer names

Alpha-2-Macroglobulin, Urine

Part names

Alpha-2-MacroglobulinPrThrPtUrineOrdImmunoelectrophoresisPresence or ThresholdPoint in time (spot)

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 40604-1 | HealthAssure