Wednesday, March 21, 2012

Why lactate dehydrogenase in Light's criteria?

LDH is an enzyme found in almost all cells.

Tissue injury releases LDH.

If it's level is elevated in the plasma or extracellular fluid, that indicates cell death or cell membrane injury :O

It happens in all cases of exudates.. Inflammation remember?

Hence, LDH can be used to differentiate between transudate & exudate :)


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