EBMcalc Medical Calculator

Fractional Excretion of Urea (FEUrea)

Input

Urine Urea

Serum Urea

Urine Creatinine

Serum Creatinine

Result

Important: Inputs must be complete to perform calculation.

FE Urea

Decimal Precision

Data action

Include literature references: Yes No

Equations used

FEUrea = (UrineUrea / SerumUrea) / (UrineCreatinine / SerumCreatinine) * 100

References

Kaplan AA, Kohn OF. Fractional excretion of urea as a guide to renal dysfunction. Am J Nephrol. 1992;12(1-2):49-54. PubMed ID: 1415365

Associated Medical Subject Headings [MeSH]

Chemical Fractionation, Follow-Up Studies, Humans, Kidney Diseases, Prospective Studies, Renal Circulation, Retrospective Studies, Sodium, Urea

Associated Logical Observation Identifiers Names and Codes [LOINC]

Parameter	LOINC's and Suggested Units
Urine Urea	3095-7 : mg/dL 3092-4 : mg/dL 14938-5 : mmol/L 22700-9 : mmol/L
Urine Creatinine	35674-1 : mg/dL 2161-8 : mg/dL 14683-7 : mmol/L
Serum Creatinine	2160-0 : mg/dL 38483-4 : mg/dL 14682-9 : mcmol/L 22726-4 : mcmol/L 59826-8 : mcmol/L

This material contains content from LOINC (http://loinc.org). LOINC is copyright © 1995-2023, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license. LOINC® is a registered United States trademark of Regenstrief Institute, Inc.

Associated ICD10-CM codes

N17.2

Acute kidney failure with medullary necrosis

N19

Unspecified kidney failure

N25.9

Disorder resulting from impaired renal tubular function, unspecified

N17.9

Acute kidney failure, unspecified

Associated ICD9-CM codes

276.5

Hypovolemia

584.9

Acute renal failure nos

588.8

Impaired renal funct nec

588.9

Impaired renal funct nos

586

Renal failure nos

583.7

Nephr nos/medull necros

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