LOINC Code 56759-4: LDH Lactate to pyruvate reaction (Sem) [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. It is commonly used with the system or sample type Semen.

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: DEPRECATED
• 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

• Deprecated Lactate dehydrogenase [Enzymatic activity/volume] in Semen by Lactate to pyruvate reaction
• Lactate dehydrogenase
• 2-Hydroxypropanoic acid; 2-hydroxy-propionate; 2-hydroxy-propionic acid; Catalytic Concentration; Chemistry; Dehydrog; Dehyrdogenase; Ejaculate; Genitourinary; GU; L to P; L.D.H; Lact; Lactic acid; Lactic acid dehydrogenase; LD; LDH; L-lactate; L-lactate dehydrogenase; Point in time; QNT; Quan; Quant; Quantitative; Random; React; Rxn; Sem; Seminal fluid; Smn; SMPLS; Tumor marker; URO; Urology

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