Lactate dehydrogenase 2

ChemistryAlso known as: Ld 2Also known as: LD2U/L

Measures LDH-2 isoenzyme activity to assess heart and red blood cell health.

Normal Range

140 – 280 U/L

U/L

Abnormal Levels

Consult your provider

Specimen Type

Blood

Why This Biomarker Matters

Elevated LDH-2 indicates heart damage, anemia, or kidney disease; elevated levels during chest pain suggest heart attack and guide urgent cardiac care.

Understanding Your Results

Normal Range

140 – 280 U/L

Overview

Lactate dehydrogenase 2 (LDH-2) is one of five isoenzymes of LDH, an enzyme found in most body tissues. LDH-2 is particularly abundant in the heart and red blood cells. This test measures LDH-2 levels and is used to assess heart and red blood cell damage. Elevated LDH-2 can indicate heart attack, hemolytic anemia (breakdown of red blood cells), or kidney disease. The pattern of LDH isoenzyme elevation helps pinpoint which tissue is damaged—for example, a "flipped" LDH-1/LDH-2 ratio is classic for recent heart attack. This test is part of cardiac injury evaluation.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

2538-7Primary

Lactate dehydrogenase 2 [Enzymatic activity/volume] in Serum or Plasma by Chemical separation

U/L

2540-3

Lactate dehydrogenase 2 [Enzymatic activity/volume] in Serum or Plasma

U/L

19248-4

Lactate dehydrogenase 2 [Enzymatic activity/volume] in Serum or Plasma by Electrophoresis

U/L

Available Lab Tests

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