Lactate dehydrogenase (LDH, LD) is a tetrameric molecule containing two possible forms of subunits (H and M). The result is five isoenzymes, one of which is hydroxybutyrate dehydrogenase (HBDH, LD-1) formed by four H subunits. HBDH is present mainly in heart muscle but occur also in kidney and erythrocytes. Normal serum contains mostly LD-2 with lesser amount of LD-1. Changes in the ratio of LD-1 to LD-2 indicate myocardial infarction or hemolysis.



kinetic method recommended by Deutsche Gesselschaft für Klinische Chemie (DGKC)



On board stability:

up to 12 weeks

Calibration stability:

up to 12 weeks

Measuring range:

9,21-1200 U/l

Regulatory status:


Reagent lines

  • Multipurpose Line

  • ACCENT-200

  • ACCENT-300

  • A-400

  • A-800

  • Prestige 24i
    Prestige 24i LQ HBDH (24 positions reagent tray)
    Prestige 24i LQ HBDH (36 positions reagent tray)

  • OS

  • HC

Panel: cardiac

Available reagents

The specification was based on data determined on selected analyzers. We recommend that all users should refer to the instruction for use (IFU) and instruments’ user or service manuals before proceeding.

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