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Test Code LDBF Lactate Dehydrogenase (LDH), Body Fluid

Additional Codes

CNE Order Code: BF LDH

Reporting Name

Lactate Dehydrogenase (LD), BF

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Body Fluid


Necessary Information


1. Date and time of collection are required.

2. Specimen source is required.



Specimen Required


Specimen Type: Body fluid

Preferred Source:

-Peritoneal fluid (peritoneal, abdominal, ascites, paracentesis)

-Pleural fluid (pleural, chest, thoracentesis)

-Drain fluid (drainage, Jackson Pratt [JP] drain)

-Pericardial

-Synovial

-Cerebral spinal fluid

Acceptable Source: Write in source name with source location (if appropriate)

Collection Container/Tube: Sterile container

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions:

1. Centrifuge to remove any cellular material and transfer into a plastic vial.

2. Indicate the specimen source and source location on label.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Body Fluid Ambient (preferred) 7 days
  Refrigerated  48 hours

Day(s) Performed

Monday through Sunday

CPT Code Information

83615

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LDBF Lactate Dehydrogenase (LD), BF 14803-1

 

Result ID Test Result Name Result LOINC Value
LD_BF Lactate Dehydrogenase (LD), BF 14803-1
FLD11 Fluid Type, Lactate Dehydrogenase 14725-6

Report Available

Same day/1 to 2 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Anticoagulant or additive, Breast milk, nasal secretions, gastric secretions, bronchoalveolar lavage (BAL) or bronchial washings, colostomy/ostomy, feces,  saliva, sputum, urine, or vitreous fluid Reject

Method Name

Photometric

Useful For

Identification of exudative pleural effusions

 

Lactate dehydrogenase in pericardial fluids is not diagnostically useful.

Interpretation

Pleural fluid lactate dehydrogenase (LDH) to serum LDH ratios above 0.6 are most consistent with exudative effusions.(2,6)

 

Peritoneal fluid LDH above 220 U/L suggests secondary, rather than spontaneous bacterial peritonitis, in conjunction with other laboratory, imaging, and clinical findings.(4,5)

 

Synovial fluid LDH may be elevated greater than plasma or serum LDH due to inflammatory causes. Values should be interpreted in conjunction with other clinical findings.(7)

 

All other fluids: LDH may be used to differentiate transudative from exudative effusions. The decision limits are not well defined in fluids other than pleural fluid and should be interpreted in conjunction with other clinical findings.

Reference Values

An interpretive report will be provided.