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 53417-2: Alpha naphthylesterase (BM) [Catalytic activity/Vol]

Name: LOINC Code 53417-2: Alpha naphthylesterase (BM) [Catalytic activity/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

53417-2 is a LOINC code used to identify Alpha naphthylesterase (BM) [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 Alpha naphthylesterase. It is commonly used with the system or sample type Bone mar.

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 naphthylesterase. It is commonly used with the system or sample type Bone mar.

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

Alpha naphthylesterase [Enzymatic activity/volume] in Bone marrow
Alpha naphthylesterase
Alfa; alpha-NAE; A-Naphthylesterase; ANE; ANSE; BM; BON; Bone marrow; Catalytic Concentration; Chemistry; MAR; Marrow (bone); minimal angle of resolution; Minimum angle of resolution; Point in time; 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 Alpha naphthylesterase (BM) [Catalytic activity/Vol] (53417-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Alpha naphthylesterase (BM) [Catalytic activity/Vol]Alpha naphthylesterase [Enzymatic activity/volume] in Bone marrowA-Naphthylesterase Mar-cCncAlpha naphthylesteraseCHEMAlpha naphthylesterase, Bone marrowCCnc

Frequently asked questions

Code details

Code53417-2

SystemLOINC

Display nameAlpha naphthylesterase (BM) [Catalytic activity/Vol]

DescriptionAlpha naphthylesterase

Short nameA-Naphthylesterase Mar-cCnc

ComponentAlpha naphthylesterase

PropertyCCnc

TimingPt

System (specimen)Bone mar

ScaleQn

ClassCHEM

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.26

Last changed2.26

Consumer names

Alpha naphthylesterase, Bone marrow

Part names

Alpha naphthylesteraseCCncPtBone marQnCatalytic ConcentrationPoint in time (spot)Bone marrow

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.