Laboratory test
Urine analysis by the Zimnitsky method
Test code · ОК.002
The Zimnitsky test assesses urine output and changes in specific gravity in separate samples collected over 24 hours.
- Specimen
- Urine
- Turnaround time
- 1–2 days
Collection points for the selected city
About the test
The Zimnitsky test assesses urine output and changes in specific gravity in separate samples collected over 24 hours. It helps characterise the kidneys’ ability to concentrate and dilute urine. Interpretation depends on the distribution of volume between portions, specific gravity and information about fluid intake during collection.
This test is not identical to routine urinalysis. Instructions for separate sample collection must be obtained from the laboratory; failure to follow the collection schedule limits diagnostic value. The doctor assesses the result together with symptoms, medical history and other investigations. The reference values of the individual laboratory are used for comparison, and changes over time are considered during follow-up.
Why it is ordered
- Assess the kidneys’ concentrating ability.
- Investigate the distribution of urine output over 24 hours.
How to prepare
Before taking the test, check the preparation and specimen collection requirements with the laboratory. Tell your doctor about medicines and recent treatment. Do not stop prescribed medicines on your own.
Where to have the test
All collection pointsCheck whether the test can be taken at your chosen collection point.
Happy Clinic
Rasul Dent
We will help you prepare for your visit
We will answer questions about services and the testing process.