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.

LOINCActiveBoth

LOINC Code 20758-9: Cholinesterase (Brain) [Catalytic activity/Mass]

Name: LOINC Code 20758-9: Cholinesterase (Brain) [Catalytic activity/Mass]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

20758-9 is a LOINC code used to identify Cholinesterase (Brain) [Catalytic activity/Mass] 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 Cholinesterase. It is commonly used with the system or sample type Brain.

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 Cholinesterase. It is commonly used with the system or sample type Brain.

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

What it does not mean

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

Key facts

Cholinesterase [Enzymatic activity/mass] in Brain
Cholinesterase
Acylcholine acylhydrolase; BChE; Benzoyl cholinesterase; Benzoylcholinesterase; Butyrylcholine esterase; Catalytic Content; Cerebral; Cerebrum; Che; Chemistry; Choline esterase II; CHS; Head; Intracranial; Point in time; Pseudocho; Pseudocholinesterase; QNT; Quan; Quant; Quantitative; Random

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Cholinesterase (Brain) [Catalytic activity/Mass] (20758-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Cholinesterase (Brain) [Catalytic activity/Mass]Cholinesterase [Enzymatic activity/mass] in BrainCholinesterase Brain-cCntCholinesteraseCHEMCholinesterase, BrainCCnt

Frequently asked questions

Code details

Code20758-9

SystemLOINC

Display nameCholinesterase (Brain) [Catalytic activity/Mass]

DescriptionCholinesterase

Short nameCholinesterase Brain-cCnt

ComponentCholinesterase

PropertyCCnt

TimingPt

System (specimen)Brain

ScaleQn

ClassCHEM

Example unitsU/g Hb

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.40

Consumer names

Cholinesterase, Brain

Part names

CholinesteraseCCntPtBrainQnCatalytic ContentPoint 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.