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.

LOINCBoth

LOINC Code 6773-6: CK.MB EIA [Catalytic activity/Vol]

Name: LOINC Code 6773-6: CK.MB EIA [Catalytic activity/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.823Z

6773-6 is a LOINC code used to identify CK.MB EIA [Catalytic activity/Vol] 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 Creatine kinase.MB. 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 Creatine kinase.MB. 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: DEPRECATED
Order vs observation: Both
Method: EIA

What it does not mean

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

Key facts

Deprecated Creatine kinase.MB
Creatine kinase.MB
Catalytic Concentration; Chemistry; CK; CK 2; CK MB; CK-2; CKMB; CK-MB; CPK; Creatine phosphokinase; ELFA; ELISA; Enzyme immunoassay; IAA; MEIA; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; 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

CK.MB EIA [Catalytic activity/Vol]Deprecated Creatine kinase.MBDeprecated CK MB SerPl EIA-cCncCreatine kinase.MBCHEMCreatine Kinase-MB Form (CK-MB), BloodCCnc

Frequently asked questions

Code details

Code6773-6

SystemLOINC

Display nameCK.MB EIA [Catalytic activity/Vol]

DescriptionCreatine kinase.MB

Short nameDeprecated CK MB SerPl EIA-cCnc

ComponentCreatine kinase.MB

PropertyCCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodEIA

ClassCHEM

Example unitsU/L

StatusDEPRECATED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.70

Consumer names

Creatine Kinase-MB Form (CK-MB), Blood

Part names

Creatine kinase.MBCCncPtSer/PlasQnEIACatalytic ConcentrationPoint in time (spot)Serum or PlasmaImmunoassay (EIA)

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.