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: May 8, 2025 @ 9:13 am
Disclaimer:
It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date. Updated test information can only be guaranteed by using this website.
