LOINC Code 2544-5: LDH 4 Chemical separation [Catalytic activity/Vol]

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 4. 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: Observation
• Method: Chemical separation

What it does not mean

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

Key facts

• Lactate dehydrogenase 4 [Enzymatic activity/volume] in Serum or Plasma by Chemical separation
• Lactate dehydrogenase 4
• 2-Hydroxypropanoic acid; 2-hydroxy-propionate; 2-hydroxy-propionic acid; Catalytic Concentration; Chem Sepn; Chemistry; Dehydrog; Dehyrdogenase; L.D.H; Lact; Lactate dehydrogenase.fraction 4; Lactic acid; Lactic acid dehydrogenase; LD; LD4; LDH; LDH isoenzyme 4; LDH4; L-lactate; L-lactate dehydrogenase; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Tumor marker

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

Frequently asked questions