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LOINC Code 53581-5: Angiotensin converting enzyme (Periton fld) [Catalytic activity/Vol]

53581-5 is a LOINC code used to identify Angiotensin converting enzyme (Periton 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 Angiotensin converting enzyme. It is commonly used with the system or sample type Periton 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 Angiotensin converting enzyme. It is commonly used with the system or sample type Periton 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

  • Angiotensin converting enzyme [Enzymatic activity/volume] in Peritoneal fluid
  • Angiotensin converting enzyme
  • ACE; AGT; Angio convert enzy; Angiotensin I converting enzyme; Ascites; Ascitic fluid; Ascitis; Carboxycathepsin; Catalytic Concentration; Chemistry; Dipeptidylcarboxypeptidase; Enz; Enzymes; Kininase II; PDPA; Peptidase P; Peptidyl dipeptidase A; Peritoneal fluid; Point in time; Proangiotensin; Prt; 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.

Common synonyms

Angiotensin converting enzyme (Periton fld) [Catalytic activity/Vol]Angiotensin converting enzyme [Enzymatic activity/volume] in Peritoneal fluidACE Prt-cCncAngiotensin converting enzymeCHEMAngiotensin converting enzyme, Peritoneal fluidCCnc

Frequently asked questions

Code details

Code53581-5
SystemLOINC
Display nameAngiotensin converting enzyme (Periton fld) [Catalytic activity/Vol]
DescriptionAngiotensin converting enzyme
Short nameACE Prt-cCnc
ComponentAngiotensin converting enzyme
PropertyCCnc
TimingPt
System (specimen)Periton fld
ScaleQn
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.68

Consumer names

Angiotensin converting enzyme, Peritoneal fluid

Part names

Angiotensin converting enzymeCCncPtPeriton fldQnCatalytic ConcentrationPoint in time (spot)Peritoneal 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.