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HelpTest 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.
Report Available
1 hour upon receipt.