Sign in →

Test Code FSG Specific Gravity, Body Fluid, LAB199

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Fluid, uncentrifuged and without anticoagulation.

Specimen Volume: 0.1 mL of body fluid.

Stability: Specimens should be at room temperature for testing.

Note: Indicate specimen source on specimen container and in computer.

Reference Values

Fluid transudate <1.015

Fluid exudate >1.015

Day(s) Test Set Up

Monday through Sunday

Methodology

Refractometry

Test Classification and CPT Coding

84315

Useful For

Fluid specific gravity determinations are used in the categorization of the fluid as a transudate or an exudate.

Analytic Time

1 hour upon receipt.