Monday to Friday from 7 a.m. to 12:30 p.m. and Saturdays from 8 a.m. to 12 p.m.
PREPARATION
Blood urea: 8 hours of fasting.
Urea in urine: consult your doctor about the medications you must take and discontinue all others. To perform the test, consult your doctor about the medication you can take and obtain a clean, dry, rigid plastic container with a capacity of 2 liters. Use rigid plastic containers or bottles that have not contained detergents, bleach, or soft drinks, and wash them thoroughly with water. It is advisable to avoid strenuous exercise the day before collecting the sample. It is advisable to start collecting urine early in the morning (e.g., 7:30 to 8:30 a.m.). It is advisable to avoid collecting urine during menstruation. If it is necessary to do so during this period, it is advisable to use a tampon and wash the area thoroughly with water before each urination. Collect urine for 24 hours. 24-hour urine collection: 1. On the morning of the test, urinate normally upon waking up and discard that urine. Note the time you did so. 2. From that moment on, collect all urine you eliminate during the day and the following night in the collection container. Keep all collected urine in the refrigerator or in a cool place, protecting it from heat. 3. If the container is not large enough, you can continue with another one with the same characteristics as the previous one. 4. The next morning, at the same time you discarded the first urine, urinate for the last time and collect it in the container (if, in addition to this test, your doctor has requested a complete urine test, the first urination of the next day should be collected in a separate container). 5. Take the container(s) to the laboratory as soon as possible. Very important: To obtain valid and reliable results, it is necessary that the collection of urine over 24 hours be complete without losing any portion, even if this requires using several containers and taking them to the laboratory. It is also very important that you strictly observe the start and end times, not continuing beyond 24 hours.
WHERE TO CONDUCT THE STUDY
Admission must be done at the reception desk.
