What are the 5 methods of urine collection?
There are five main methods of urine collection with urine collector
, which are used for different types of urine testing to meet the needs of different patients. These methods include:
1. Clean-catch or midstream collection: This is the most common method of urine collection and involves collecting a midstream urine sample after cleaning the genital area with an antiseptic solution. The initial stream of urine is allowed into the toilet, and then the sample is collected in a sterile container.
2. Timed urine collection: This method involves collecting all urine produced within a specified period of time, usually 24 hours. The first urine sample of the day is discarded, and all subsequent urine is collected in a special container marked with the start and end times of the collection period.
3. Pediatric urine collection: This method is used to collect urine samples from infants who have not yet been toilet trained. It involves attaching a small plastic bag or collection device to the skin around the genital area to collect urine.
4. Catheterization: This procedure involves passing a thin tube (catheter) through the urethra and into the bladder to collect a urine sample. Used when a clean urine sample is not available or when a sterile urine sample is required.
5. Suprapubic aspiration: This method involves inserting a needle through the skin of the lower abdomen into the bladder to collect a urine sample. Used when other methods of urine collection are not feasible or when a sterile urine sample is required.
How long can urine be kept before the test?
Urine collected for testing is best tested as soon as possible after collection, usually within 1-2 hours, for the most accurate results. However, if testing is not immediately possible, the urine sample can be kept in the refrigerator for a short period of time, usually up to 24 hours, before testing.
After 24 hours, the urine can start to deteriorate and test results may be unreliable or inaccurate. Factors such as temperature, light, and bacterial growth can also affect the integrity of a urine sample, so it is important to follow proper storage and handling procedures to maintain sample quality.
In general, it is recommended that the urine sample be shipped to the laboratory for analysis as soon as possible after collection with a urine collector
to minimize the risk of any change or degradation of the sample. If samples cannot be shipped immediately, they should be stored in a cool place, such as a refrigerator, until they can be shipped to a laboratory for testing.
How do you know if a urine sample is contaminated?
If the urine sample collected by the urine collector
comes into contact with bacteria or other microorganisms, it will become contaminated, which will affect the accuracy of the test results. Common signs of urine contamination include:
1. Presence of epithelial cells: Epithelial cells are the cells that line the urethra and can be present in small amounts in urine samples. However, excess epithelial cells may indicate contamination of the sample.
2. Presence of white blood cells: The presence of white blood cells in a urine sample may indicate a urinary tract infection or inflammation, but if there are too many white blood cells, it may also be a sign of contamination.
3. Presence of bacteria or fungi: The presence of bacteria or fungi in a urine sample may indicate a urinary tract infection or another type of infection. However, the presence of large numbers of bacteria or fungi may indicate contamination of the sample.
4. Odor: A strong or unpleasant odor in the urine sample indicates the presence of bacteria, which can contaminate the sample and affect test results.
5. Improper collection: If the urine sample is not collected properly, it can also lead to contamination. For example, contamination can result if the genital area is not properly cleaned before collection, or if the sample is not collected halfway through.