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 50591-7: Adenosine deaminase (Trophoblasts) [Catalytic activity/Mass]

Name: LOINC Code 50591-7: Adenosine deaminase (Trophoblasts) [Catalytic activity/Mass]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

50591-7 is a LOINC code used to identify Adenosine deaminase (Trophoblasts) [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 Adenosine deaminase. It is commonly used with the system or sample type Trophoblasts.

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 Adenosine deaminase. It is commonly used with the system or sample type Trophoblasts.

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

Adenosine deaminase [Enzymatic activity/mass] in Trophoblasts
Adenosine deaminase
ADA; ADO; ANED; Catalytic Content; Chemistry; Cytotrophoblast; Cytotrophoblasts; Medication stress; Point in time; QNT; Quan; Quant; Quantitative; Random; Syncytiotrophoblast; Syncytiotrophoblasts; Trophoblast

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 Adenosine deaminase (Trophoblasts) [Catalytic activity/Mass] (50591-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Adenosine deaminase (Trophoblasts) [Catalytic activity/Mass]Adenosine deaminase [Enzymatic activity/mass] in TrophoblastsAdenosine deaminase Trophoblasts-cCntAdenosine deaminaseCHEMAdenosine deaminase, TrophoblastsCCnt

Frequently asked questions

Code details

Code50591-7

SystemLOINC

Display nameAdenosine deaminase (Trophoblasts) [Catalytic activity/Mass]

DescriptionAdenosine deaminase

Short nameAdenosine deaminase Trophoblasts-cCnt

ComponentAdenosine deaminase

PropertyCCnt

TimingPt

System (specimen)Trophoblasts

ScaleQn

ClassCHEM

Example unitsnmol/min/mg protein

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.22

Last changed2.70

Consumer names

Adenosine deaminase, Trophoblasts

Part names

Adenosine deaminaseCCntPtTrophoblastsQnCatalytic 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.