Renal Emergency Medicine Gastroenterology Moderate — standard screening tool; not specific on its own
BUN/Creatinine Ratio
The ratio of blood urea nitrogen (urea) to creatinine helps differentiate pre-renal from intrinsic renal causes of acute kidney injury, and can identify upper GI bleeding.
References
- Feinfeld DA, Bargouthi H, Niaz Q, Carvounis CP. Fractional excretion of urea as a test of renal impairment. Clin Nephrol. 2003;59(5):349–354.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Emollients, urea-containing · Topical emollient (urea, keratolytic)
- Urea Hydrogen Peroxide Ear Drops · Ear Wax Softening / Cerumenolytic
- Urea hydrogen peroxide · Cerumenolytic
- Carglumic acid · Carbamoyl phosphate synthetase 1 activator (urea cycle defect)
- Urea (13C) · 13C-urea breath test
- Vancomycin (Renal Dosing) · Antibiotic Dosing in CKD
Pathways
- Hyperkalaemia Management · UK Kidney Association Guidelines 2020; NICE CKD Guidelines
- Rhabdomyolysis · Renal Association 2018; UpToDate 2024
- Hypocalcaemia (Adult) · Society for Endocrinology
- SIADH (Endocrine Perspective) · European Hyponatraemia Guidelines 2014
- Hepatorenal Syndrome · EASL 2018; ICA 2015
- Acute Kidney Injury (AKI) · KDIGO 2012 / NICE AKI 2019
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.