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 2097-4: Cholinesterase (Amn fld) [Catalytic activity/Vol]

Name: LOINC Code 2097-4: Cholinesterase (Amn fld) [Catalytic activity/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

2097-4 is a LOINC code used to identify Cholinesterase (Amn fld) [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 Cholinesterase. It is commonly used with the system or sample type Amnio fld.

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 Amnio fld.

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/volume] in Amniotic fluid
Cholinesterase
Acylcholine acylhydrolase; AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; BChE; Benzoyl cholinesterase; Benzoylcholinesterase; Butyrylcholine esterase; Catalytic Concentration; Che; Chemistry; Choline esterase II; CHS; 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 (Amn fld) [Catalytic activity/Vol] (2097-4)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Cholinesterase (Amn fld) [Catalytic activity/Vol]Cholinesterase [Enzymatic activity/volume] in Amniotic fluidCholinesterase Amn-cCncCholinesteraseCHEMCholinesterase, Amniotic fluidCCnc

Frequently asked questions

Code details

Code2097-4

SystemLOINC

Display nameCholinesterase (Amn fld) [Catalytic activity/Vol]

DescriptionCholinesterase

Short nameCholinesterase Amn-cCnc

ComponentCholinesterase

PropertyCCnc

TimingPt

System (specimen)Amnio fld

ScaleQn

ClassCHEM

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.68

Consumer names

Cholinesterase, Amniotic fluid

Part names

CholinesteraseCCncPtAmnio fldQnCatalytic ConcentrationPoint in time (spot)Amniotic fluid

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.