LOINC Code 51521-3: LDH 5 Elph (Pleur fld) [Catalytic fraction]

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 5/Lactate dehydrogenase.total. It is commonly used with the system or sample type Plr fld.

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: Electrophoresis

What it does not mean

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

Key facts

• Lactate dehydrogenase 5/Lactate dehydrogenase.total in Pleural fluid by Electrophoresis
• Lactate dehydrogenase 5/Lactate dehydrogenase.total
• 2-Hydroxypropanoic acid; 2-hydroxy-propionate; 2-hydroxy-propionic acid; Catalytic Fraction; Chemistry; Dehydrog; Dehyrdogenase; Elec; Elect; Electr; Electro; Electrophhrs; Electrophrs; Elp; Elph; Ep; L.D.H; Lact; Lactate dehydrogenase.fraction 5; Lactic acid; Lactic acid dehydrogenase; LD; LD5; LDH; LDH isoenzyme 5; LDH5; L-lactate; L-lactate dehydrogenase; Percent; Pleural; Pleural fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; thoracentesis fluid; Tot; Totl; 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.

Related SNOMED CT concepts

Related observations and tests

Common synonyms

Frequently asked questions