LOINCActiveBoth

LOINC Code 14804-9: LDH Lactate to pyruvate reaction [Catalytic activity/Vol]

14804-9 is a LOINC code used to identify LDH Lactate to pyruvate reaction [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 Lactate dehydrogenase. It is commonly used with the system or sample type Ser/Plas.

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 Lactate dehydrogenase. It is commonly used with the system or sample type Ser/Plas.

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
  • Method: Reaction: lactate to pyruvate

What it does not mean

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

Key facts

  • Lactate dehydrogenase [Enzymatic activity/volume] in Serum or Plasma by Lactate to pyruvate reaction
  • Lactate dehydrogenase
  • 2-Hydroxypropanoic acid; 2-hydroxy-propionate; 2-hydroxy-propionic acid; Catalytic Concentration; Chemistry; Dehydrog; Dehyrdogenase; L to P; L.D.H; Lact; Lactic acid; Lactic acid dehydrogenase; LD; LDH; L-lactate; L-lactate dehydrogenase; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; React; Rxn; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Tumor marker; UniversalLabOrders

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

LDH Lactate to pyruvate reaction [Catalytic activity/Vol]Lactate dehydrogenase [Enzymatic activity/volume] in Serum or Plasma by Lactate to pyruvate reactionLDH SerPl L to P-cCncLactate dehydrogenaseCHEMLactate Dehydrogenase (LDH), BloodCCnc

Frequently asked questions

Code details

Code14804-9
SystemLOINC
Display nameLDH Lactate to pyruvate reaction [Catalytic activity/Vol]
DescriptionLactate dehydrogenase
Short nameLDH SerPl L to P-cCnc
ComponentLactate dehydrogenase
PropertyCCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
MethodReaction: lactate to pyruvate
ClassCHEM
Example unitsarb U/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.73

Consumer names

Lactate Dehydrogenase (LDH), Blood

Part names

Lactate dehydrogenaseCCncPtSer/PlasQnReaction: lactate to pyruvateCatalytic ConcentrationPoint in time (spot)Serum or PlasmaReaction - lactate to pyruvate

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 14804-9 | HealthAssure