LOINCBoth

LOINC Code 6378-4: CMV Ag EMIA (U)

6378-4 is a LOINC code used to identify CMV Ag EMIA (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 Cytomegalovirus Ag. It is commonly used with the system or sample type Urine.

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 Cytomegalovirus Ag. 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: DEPRECATED
  • Order vs observation: Both
  • Method: EMIA

What it does not mean

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

Key facts

  • Deprecated Cytomegalovirus Ag in urine
  • Cytomegalovirus Ag
  • Antigen; Antigens; Arbitrary concentration; CMV; Cytomegalo virus; Cytomgal; HHV-5; Human Herpesvirus-5; ID; Infectious Disease; InfectiousDisease; Microbiology; Micropartical enzyme immunoassay?; Point in time; Random; 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

CMV Ag EMIA (U)Deprecated Cytomegalovirus Ag in urineDeprecated CMV Ag Ur EMIACytomegalovirus AgMICROCytomegalovirus (CMV) antigen, UrineACnc

Frequently asked questions

Code details

Code6378-4
SystemLOINC
Display nameCMV Ag EMIA (U)
DescriptionCytomegalovirus Ag
Short nameDeprecated CMV Ag Ur EMIA
ComponentCytomegalovirus Ag
PropertyACnc
TimingPt
System (specimen)Urine
ScaleOrdQn
MethodEMIA
ClassMICRO
StatusDEPRECATED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0f
Last changed2.40

Consumer names

Cytomegalovirus (CMV) antigen, Urine

Part names

Cytomegalovirus AgACncPtUrineOrdQnEMIAArbitrary ConcentrationPoint 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 6378-4 | HealthAssure