A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

LDH, Fluid

Message
Include Fluid TYPE/SOURCE with order


Test Code
FLDH1


Alias/See Also
Body Fluid LDH, LDH


CPT Codes
83615

Preferred Specimen
FLUID (FLD)


Methodology
Beckman AU

Reference Range
Synovial Fluid: less than (<) 240 U/L
Peritoneal or Ascites:
  • Transudate- less than (<) 400 U/L
  • Exudate- greater than or equal to (≥) 400 U/L
Pleural:
  • Transudate- less than (<) 200 U/L
  • Exudate- greater than or equal to (≥) 200 U/L
Pericardial:
  • Transudate- less than (<) 200 U/L
  • Exudate- greater than (>) 300 U/L

*NOTE: The ratio between body fluid LDH and serum LDH, and the body fluid LDH as a fraction of the serum upper limit of normal, also have diagnostic utility, particularly in pleural effusion.


Clinical Significance

Clinical Significance in Body Fluids: Serous fluids can also be evaluated for LDH levels including pleural fluid (obtained by Thoracentesis), pericardial fluid (obtained by Pericardiacentesis), peritoneal or ascites fluid (obtained by Paracentesis), and synovial (or joint) fluid (obtained by Arthrocentesis). Cerebrospinal fluid (CSF) may also be evaluated for LDH to help determine between bacterial or viral meningitis. Many pathologic conditions can cause a buildup (effusion) of serous fluids. Effusion of serous fluid can be placed into two general categories: transudates and exudates. A transudate is created by an imbalance of pressure within the blood vessels and the amount of protein in the blood. An example is the changes in hydrostatic pressure created by congestive heart failure. Exudates are produced by conditions that directly involve the membranes of the particular cavity including infections, injury, and malignancies.




Performing Laboratory
CRMC Laboratory



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.