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Test Code SGU Specific Gravity Urine

EHR Test Codes

  Test Code Test Name
Atlas SGU Specific Gravity Urine
Cerner   Specific Gravity Urine

Specimen Requirements

Preparation of Patient: 

None.

 

Container Type: 

Sterile Specimen Cup

 

or

 

White Top 6mL No Additive Tube

 

Specimen Type:

Urine

 

Specimen Volume: 

6 mL Urine minimum .5 mL

 

Specimen Handling/Transport:

Aliquot urine into White Top 6ml No Additive Tube if availible via urine transfer straw.  Transport refrigerated 2-8°C.

 

Specimen Stability/Storage:

4 hours ambient room temperature.

1 day refrigerated 2 - 8°C

24 hours  refrigerated 2-8°C

 

Specimen Rejection:

Samples in preservatives

Performing Laboratory

Munson Healthcare Laboratories

Chemistry Department

Priority, Frequency, & Turnaround

Priority:

Non-Emergent

 

Frequency:

24 hours 7 days a week

 

Turnaround:

0 - 1 days

Methodology

Refractometer

Reporting

Reference Range:

1.003 - 1.035

 

Critical Decision: 

None

Clinical Significance

Specific gravity is important in assessing the concentrating ability of the kidneys. The production of urine of low specific gravity may also accompany certain diseases with otherwise relatively normal tubular function, such as diabetes insipidus or occasionally hyperparathyroidism and sickle cell anemia. Urea, sodium, and chloride are the solids present in the greatest concentration in the urine but the specific gravity may also be influenced by high concentrations of glucose and protein and by x-ray contrast media. Specific gravity in fluids can aide physicians in determining if the fluid is a transudate (1.015).

CPT Code(s)

81003