SPECIFIC GRAVITY, FLUID

Code
201.7000
Name
SPECIFIC GRAVITY, FLUID
Category
None
Department
Urinalysis
Start Date
Expiration Date
Synonyms
CPT Codes
84315
Site
Main Lab
Reference Test
ATLAS Test Code

Specimen Information

Type

Sterile Cup

Volume

2.0 ml

Transport Info

Refrigerated

Fasting Required?
False
Patient Instructions

Indicate source of fluid on requisition.

Reference Range

Reference ranges not available.

Methodology

Refractometer

Clinical Significance

Used to determine concentration of specimen.

Serous fluids for laboratory examination are collected by needle aspiration from body cavities. These aspiration procedures could include thoracentesis (pleural), pericardiacentesis (pericardial), synovial (joint) fluid and paracentesis (peritoneal). 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 disrupts the balance in the regulation of fluid filtration and reabsorption. 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 and malignancies. Analysis of body fluid usually includes one or more of the following: cell count, differential, total protein, crystals, pH, specific gravity, glucose, albumin, amylase, sodium, potassium, chloride, LD, creatinine, urea nitrogen, uric acid, routine culture, and cytologic studies. Additional testing may include specialized microbiology cultures for AFB or fungus or testing for the presence of bilirubin. Only those tests that are ordered will be performed.

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