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 54457-7: Biotinidase (S/P normal control) [Catalytic activity/Vol]

Name: LOINC Code 54457-7: Biotinidase (S/P normal control) [Catalytic activity/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.583Z

54457-7 is a LOINC code used to identify Biotinidase (S/P normal control) [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 Biotinidase. It is commonly used with the system or sample type Ser/Plas^Normal 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 Biotinidase. It is commonly used with the system or sample type Ser/Plas^Normal 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: Both

What it does not mean

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

Key facts

Biotinidase [Enzymatic activity/volume] in Serum or Plasma from Normal control
Biotinidase
Catalytic Concentration; Chemistry; Contrl; Control; norm cont; Normal; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPl^normal control; 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.

Common synonyms

Biotinidase (S/P normal control) [Catalytic activity/Vol]Biotinidase [Enzymatic activity/volume] in Serum or Plasma from Normal controlBiotinidase SerPl Norm cont-cCncBiotinidaseCHEMBiotinidase, normal Control BloodCCnc

Frequently asked questions

Code details

Code54457-7

SystemLOINC

Display nameBiotinidase (S/P normal control) [Catalytic activity/Vol]

DescriptionBiotinidase

Short nameBiotinidase SerPl Norm cont-cCnc

ComponentBiotinidase

PropertyCCnc

TimingPt

System (specimen)Ser/Plas^Normal control

ScaleQn

ClassCHEM

Example unitsarb U/L

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.73

Consumer names

Biotinidase, normal Control Blood

Part names

BiotinidaseCCncPtSer/Plas^normal controlQnCatalytic ConcentrationPoint in time (spot)Serum or Plasma^normal control

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.