The purpose of the examination is to identify incipient kidney damage reliably early enough. The quantity of albumin excreted during a night’s rest is examined. Stress increases the excretion of albumin and induces incorrect results.


Do not collect urine during your menstrual period. You can start collecting urine when two days have passed since the end of visible menstrual bleeding. If you have a sudden urinary tract infection, start the collection when a physician has confirmed that you have recovered. Do not consume alcohol during the examination period. Only light exercise is recommended after 6 p.m.

Collection of urine

Empty your bladder before bed as usual. This urine is not collected. Write down the collection start time to an accuracy of one minute.


Starting from this time, collect the urine excreted during a night’s sleep in a collecting container. The period of collection should last at least six hours.

The following morning, empty your bladder into a collecting container for the last time when you get up. Stop collecting urine at this point. Write down the time of the last urine batch to an accuracy of one minute.


The name tag is necessary for identifying the sample

Stick a label on to the side of the collecting container. Write on it your

  • name
  • social security number
  • start and end of collecting (dates and times to an accuracy of one minute)

Store in a cool place

Store the collecting containers in a cool place (+2ºC ‐ +8ºC) during and after the collecting period. Samples will keep for up to one week in the refrigerator.

Deliver the collecting containers to the laboratory as soon as possible.

Further information

For more information, please contact the customer service of Fimlab Laboratoriot Oy, tel. (03) 311 74445 on weekdays from 8 a.m. to 4 p.m., or the customer service of the Ostrobothnia region, tel. (06) 213 1626 on weekdays from 7 a.m. to 3 p.m.