Lactic Acid Dehydrogenase (LD), Body Fluid

Test ID: 

703012

CPT code:

83615

Synonyms:

Lactate Dehydrogenase, Variable
LD Variable

Clinical Use:

A fluid LD activity nearly equal to the plasma activity is usually associated with inflammatory processes

Test Information:

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

Specimen Type:

Fluid or cerebrospinal fluid (CSF)

Requested Volume: 

1 mL fluid or 1 mL CSF

Minimum Volume: 

0.3 mL

Container Type: 

Sterile body fluid container

Storage Instructions:

Room temperature

Stability Requirements:

Expected Turnaround Time:

1 to 2 Days

Rejection Criteria

Improper labeling