LOINCActiveObservation

LOINC Code 53444-6: Citrate synthase (WBC control) [Catalytic activity/Mass]

53444-6 is a LOINC code used to identify Citrate synthase (WBC control) [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 Citrate synthase. It is commonly used with the system or sample type WBC^Control.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Citrate synthase. It is commonly used with the system or sample type WBC^Control.

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

  • Citrate synthase [Enzymatic activity/mass] in Control Leukocytes
  • Citrate synthase
  • Catalytic Content; Chemistry; Citric acid; Contrl; Leukocytes; Normal; Point in time; QNT; Quan; Quant; Quantitative; Random; WBCs; White blood cells

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

Citrate synthase (WBC control) [Catalytic activity/Mass]Citrate synthase [Enzymatic activity/mass] in Control LeukocytesCitrate Synthase WBC Cont-cCntCitrate synthaseCHEMCitrate synthase, control White blood cellsCCnt

Frequently asked questions

Code details

Code53444-6
SystemLOINC
Display nameCitrate synthase (WBC control) [Catalytic activity/Mass]
DescriptionCitrate synthase
Short nameCitrate Synthase WBC Cont-cCnt
ComponentCitrate synthase
PropertyCCnt
TimingPt
System (specimen)WBC^Control
ScaleQn
ClassCHEM
Example unitsnmol/min/mg protein
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.70

Consumer names

Citrate synthase, control White blood cells

Part names

Citrate synthaseCCntPtWBC^controlQnCatalytic 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.

LOINC Code 53444-6 | HealthAssure