Clinicians order this ratio to help explain unusual urea or creatinine results and to assess hydration or blood flow to the kidneys. It can offer clues in suspected dehydration, gastrointestinal bleeding, high protein intake, or sudden kidney stress. Results often guide next steps like repeating the test, reviewing medicines and diet, or adding eGFR and urinalysis. You can test this marker with Aniva across Germany and Finland.

Clinicians order this ratio to help explain unusual urea or creatinine results and to assess hydration or blood flow to the kidneys. It can offer clues in suspected dehydration, gastrointestinal bleeding, high protein intake, or sudden kidney stress. Results often guide next steps like repeating the test, reviewing medicines and diet, or adding eGFR and urinalysis. You can test this marker with Aniva across Germany and Finland.

High: Often reflects dehydration or reduced kidney blood flow; can also rise with high protein intake, tissue breakdown, upper GI bleeding, or certain medicines.
Low: May reflect low protein intake or reduced urea production (such as with advanced liver disease), or relatively higher creatinine from larger muscle mass, recent hard exercise, or creatine supplements. This ratio is not guideline-endorsed; no standardized cutoffs. Trends and context with other tests matter most.

• Urea
• Creatinine
• eGFR (Creatinine)
• Urinalysis
• Cystatin C

Common factors include dehydration or overhydration, high-protein meals, gastrointestinal bleeding, recent strenuous exercise, and pregnancy. Certain medicines (like corticosteroids or some antibiotics) and supplements (such as creatine or high-dose vitamin C) can shift the ratio. Muscle mass, acute illness, and timing of sampling may also affect results.

Special situations (when to confirm or adjust): acute illness, pregnancy, extremes of age or muscle mass, or known liver disease—repeat and interpret with related kidney tests.