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Specific Gravity - Urine

Source Urine
Mnemonic USG
Specimen Requirements

8 mL aliquot of random urine collection.

Minimum 2 mL

No preservative

Specimen Handling
Additional Information Specific gravity measures the density of a fluid compared to the density of pure water. Unlike osmolality, it does not directly measure the number of particles that are osmotically active.
Testing Location Chemistry-ACH, FMC, PLC, RGH, ACHC, CCHC, SCHC, SMCHC & Hematology-DSC
Rural: CRL
Testing Frequency Daily
Alternate Name(s)
Reference Interval 1.005 - 1.030