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Test ID SGUR Specific Gravity, Random, Urine


Ordering Guidance


Urine with contrast dye, glucose, or excessive protein should not be evaluated with this test. In these cases, urine osmolality is a better measure of urine concentration. Order UOSMU / Osmolality, Random, Urine.



Specimen Required


Container/Tube: Plastic urine container

Specimen Volume: 20 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.


Secondary ID

606565

Useful For

As a partial assessment of the kidney's ability to concentrate urine

Specimen Type

Urine

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

1.002-1.030

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 day

CPT Code Information

81005