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 78359-7: Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate (Fibroblast) [Catalytic ratio]

Name: LOINC Code 78359-7: Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate (Fibroblast) [Catalytic ratio]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:58.756Z

78359-7 is a LOINC code used to identify Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate (Fibroblast) [Catalytic ratio] 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 Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate. It is commonly used with the system or sample type Fibroblasts.

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 Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate. It is commonly used with the system or sample type Fibroblasts.

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

Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate [Enzymatic activity ratio] in Fibroblast

Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate

Medium- and long-chain acyl CoA dehydrogenase deficiencies can be differentiated based on the ratio of palmitate oxidation [LOINC78358-9] and myristate oxidation [LOINC: 78360-5] in cultured fibroblasts. Patients with medium chain acyl-CoA dehydrogenase deficiency (MCAD) typically have a high palmitate/myristate (P/M) ratio. Long-chain defects, including VLCAD and LCHAD, generally have a low P/M ratio. [PMID: 10709659]

ACADs; ACADs.myristate; ACADs.palmitate; C140; C16:0; Catalytic Concentration Ratio; Catalytic Ratio; CCrto; Chemistry; Enzymatic activity ratio; Fib; Fibr; Hexadecanoate; Hexadecanoic acid; Myristic acid; Palmitic acid; Point in time; QNT; Quan; Quant; Quantitative; Random; Tetradecanoate; Tetradecanoic acid

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

Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate (Fibroblast) [Catalytic ratio]Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate [Enzymatic activity ratio] in FibroblastACADs.palmitate/ACADs.myristate Fib-cRtoAcyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrateCHEMAcyl coA dehydrogenases.palmitate substrate/Acyl CoA Dehydrogenases.myristate Substrate, FibroblastCRto

Frequently asked questions

Code details

Code78359-7

SystemLOINC

Display nameAcyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate (Fibroblast) [Catalytic ratio]

DescriptionAcyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate

Short nameACADs.palmitate/ACADs.myristate Fib-cRto

ComponentAcyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrate

PropertyCRto

TimingPt

System (specimen)Fibroblasts

ScaleQn

ClassCHEM

Example unitsratio

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Consumer names

Acyl coA dehydrogenases.palmitate substrate/Acyl CoA Dehydrogenases.myristate Substrate, Fibroblast

Part names

Acyl CoA dehydrogenases.palmitate substrate/Acyl CoA dehydrogenases.myristate substrateCRtoPtFibroblastsQnCatalytic RatioPoint in time (spot)Fibroblast

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.