Specimen:
Collect
- One SST
- Random Urine in Sterile Specimen Container
Submit
- 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
- 10 mL (Min:0.5 mL) Random Urine . Submit Refrigerated.
Special Handling
- See Individual Components for Special Handling and Alternate Sample Types
- Serum must be collected within 24 hours of urine collection.
Stability
See Individual Components
Methodology
- Colorimetric
Performed
Mon-Fri
Reported
1-2 Day(s)
CPT Codes
- 82565
- 82570
- 84295
- 84300
Interpretive Data
Please see report for interpretive data.
Prerenal Intrinsic Renal Postrenal
URINE SODIUM (meq/L) <20 >40 >40
FENa <1% >1% >4%
Prerenal: Anything that causes decreased effective renal perfusion: Hypovolemia, CHF, Renal Artery Stenosis, Sepsis, etc. Remember, contrast-induced nephrology will often look pre-renal.
Intrinsic Renal: ATN, AIN, Glomerulonephritis, etc.
Postrenal: Obstruction (BPH, bladder stone, bilateral ureter obstruction)
Prerenal Intrinsic Renal Postrenal
URINE SODIUM (meq/L) <20 >40 >40
FENa <1% >1% >4%
Prerenal: Anything that causes decreased effective renal perfusion: Hypovolemia, CHF, Renal Artery Stenosis, Sepsis, etc. Remember, contrast-induced nephrology will often look pre-renal.
Intrinsic Renal: ATN, AIN, Glomerulonephritis, etc.
Postrenal: Obstruction (BPH, bladder stone, bilateral ureter obstruction)
Components
- 1014 - CREATININE, SERUM
- 1108 - SODIUM,URINE
- 1026 - SODIUM
- 2498 - CREATININE, URINE
- 1086 - FENA
Last Updated: April 23, 2025 @ 5:31 pm
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