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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
Useful For
Fluid specific gravity determinations are used in the categorization of the fluid as a transudate or an exudate.
Methodology
Refractometry
Test Classification and CPT Coding
84315
Report Available
1 hour upon receipt.