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.

LOINCActiveObservation

LOINC Code 49251-2: Amylase isoenzymes Nar [Interp]

Name: LOINC Code 49251-2: Amylase isoenzymes Nar [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

49251-2 is a LOINC code used to identify Amylase isoenzymes Nar [Interp] 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 Amylase isoenzymes. It is commonly used with the system or sample type Ser/Plas.

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 Amylase isoenzymes. 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: ACTIVE
Order vs observation: Observation

What it does not mean

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

Key facts

Amylase isoenzymes [Interpretation] in Serum or Plasma Narrative
Amylase isoenzymes
Alpha amylase; Ams; Amyl; Amylase Isos; Chemistry; Diastase; Gastro; Gastroenterology; GI; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; ISO; Isoamy; Isoamylase; Isoen; Isoenzyme; k87; Narrative; Pl; Plasma; Plsm; Point in time; Random; Report; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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 Amylase isoenzymes Nar [Interp] (49251-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Amylase isoenzymes Nar [Interp]Amylase isoenzymes [Interpretation] in Serum or Plasma NarrativeAmylase Isos SerPl-ImpAmylase isoenzymesCHEMInterpretation of Amylase isoenzymes test result, BloodImp

Frequently asked questions

Code details

Code49251-2

SystemLOINC

Display nameAmylase isoenzymes Nar [Interp]

DescriptionAmylase isoenzymes

Short nameAmylase Isos SerPl-Imp

ComponentAmylase isoenzymes

PropertyImp

TimingPt

System (specimen)Ser/Plas

ScaleNar

ClassCHEM

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.73

Consumer names

Interpretation of Amylase isoenzymes test result, Blood

Part names

Amylase isoenzymesImpPtSer/PlasNarImpression/interpretation of studyPoint in time (spot)Serum or Plasma

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.