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- Lactate Dehydrogenase, Variable
- LD Variable
A fluid LD activity nearly equal to the plasma activity is usually associated with inflammatory processes
• Peritoneal: Not established
− Transudate: <200 U/L
− Exudate: >200 U/L
• Synovial: <240 U/L
• CSF: Not established
The method performance specifications have not been established for this test in body fluid. The test result should be integrated into the clinical context for interpretation.
Lactate dehydrogenase (LD) is a normal component of CSF. Increased amounts may occur in association with ischemic necrosis, meningitis, leukemia, metastatic cancer of the CNS, and lymphoma. LDH1 and LDH2 are decreased in lavage fluid in pulmonary alveolar proteinosis.1 One application of LD measurement is the differential diagnosis of intracranial hemorrhage in neonates versus traumatic tap. Lactate dehydrogenase is elevated in proportion to severity of CNS hemorrhage, but unchanged by traumatic tap. CSF LDH is higher in stroke than in transient ischemic attack.2
Fluid or cerebrospinal fluid (CSF)
1 mL fluid or 1 mL CSF
Causes for Rejection
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|100156||LD, Body Fluid||2529-6||100156||LD, Body Fluid||IU/L||2529-6|