Residual Nitrogen
Indicator of protein metabolism and kidney function.
The test helps:
- detect renal failure
- assess the severity of metabolic disorders
Biomaterial: Venous blood
- Submit fasting (8-12 hours without food)
- Water intake is allowed
- Avoid alcohol and fatty food for 24 hours
- Avoid smoking and physical/emotional exertion 30 minutes before
Medications: if taking medications (especially antibiotics, hormones, anticonvulsants, painkillers) — inform staff. Do not discontinue medications yourself (only as prescribed by a doctor)
Prescribed for:
- kidney diseases
- intoxications
- chronic diseases
Elevation — renal failure, dehydration
Decrease — nutritional disorders
For abnormalities, consultation with a nephrologist is recommended. Self-treatment is contraindicated.