For the study:
• Consult your doctor about the medications you must take and discontinue all others.
• Obtain a clean, dry, rigid plastic container with a capacity of 2 liters (minimum 1.5 liters). Use rigid plastic bottles or containers that have not contained detergents, bleach, or soft drinks, and wash them thoroughly with water. For example, mineral water bottles can be used.
• It is advisable not to engage in intense physical 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 not to collect urine during menstruation. If it is necessary to do so during this period, it is recommended to use a tampon and wash the area thoroughly with water before each urination.
• Collect urine over a 24-hour period.
• Obtain a clean, dry, rigid plastic container with a capacity of 2 liters (minimum 1.5 liters). Use rigid plastic bottles or containers that have not contained detergents, bleach, or soft drinks, and wash them thoroughly with water. For example, mineral water bottles can be used.
• It is advisable not to engage in intense physical 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 not to collect urine during menstruation. If it is necessary to do so during this period, it is recommended to use a tampon and wash the area thoroughly with water before each urination.
• Collect urine over a 24-hour period.
Procedure for collecting 24-hour urine:
1. On the morning of the test, urinate normally upon waking up and discard that urine.
Note the time you did this.
2. From that moment on, collect all urine in the collection container
during the day and the following night. 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 sample, urinate for the last time and collect it in the container (if, in addition to this test, your doctor has requested a complete urine sample, the first urination of the following 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 the 24-hour urine sample be complete without any loss. 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 means
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.
24-HOUR URINE COLLECTION WITH ACID
To carry out the study, it is necessary to:
• Consult with your doctor about the medications you must take and discontinue
the others.
the others.
• Obtain a clean, dry, rigid plastic container with a capacity of 2 liters (minimum 1.5
liters). Use rigid plastic bottles or containers that have not previously contained detergents,
bleach, or soft drinks, and wash them thoroughly with water. For example, you can use
mineral water bottles.
liters). Use rigid plastic bottles or containers that have not previously contained detergents,
bleach, or soft drinks, and wash them thoroughly with water. For example, you can use
mineral water bottles.
• Request the bottle with preservative (hydrochloric acid; 10 cm3 for adults or 5 cm3 for children) from the laboratory. Caution: Hydrochloric acid is highly corrosive; avoid spills and contact with skin; keep out of reach of children.
It is advisable not to collect urine during your period. If it is
necessary to do so, insert a tampon and wash the area thoroughly with water before
each urination.
necessary to do so, insert a tampon and wash the area thoroughly with water before
each urination.
• Collect 24-hour urine with hydrochloric acid.
It is advisable to start collecting urine early in the morning (e.g., between 7:30 and 8:30 a.m.).
24-hour urine collection:
1. On the morning of the test, upon waking up, urinate normally and discard that urine.
Note the time you did this.
2. From that moment on, place the preservative in the collection container and collect
all the urine you eliminate during the day and the following night. Keep all the
urine collected in the refrigerator until it is delivered to the laboratory.
3. If the container is not large enough, transfer approximately half of the urine collected to
another container and then alternately place all subsequent urine in one or the other. If
necessary, do the same with a third container. All urine must be preserved
with acid.
4. The next morning, at the same time you discarded the first urine sample, 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 following day must be collected in a separate container).
5. Take all containers 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 means
using several containers and taking them all to the laboratory. It is also very
important that you strictly observe the start and end times, not continuing beyond 24 hours.
Note the time you did this.
2. From that moment on, place the preservative in the collection container and collect
all the urine you eliminate during the day and the following night. Keep all the
urine collected in the refrigerator until it is delivered to the laboratory.
3. If the container is not large enough, transfer approximately half of the urine collected to
another container and then alternately place all subsequent urine in one or the other. If
necessary, do the same with a third container. All urine must be preserved
with acid.
4. The next morning, at the same time you discarded the first urine sample, 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 following day must be collected in a separate container).
5. Take all containers 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 means
using several containers and taking them all to the laboratory. It is also very
important that you strictly observe the start and end times, not continuing beyond 24 hours.
