June Urine Tests. Kids Health. March University of Florida Health. January 26, What Is a Urinalysis? National Kidney Foundation. August 8, Sources Urinalysis and Urine Culture. Merck Manual. November Health Topics. Health Tools. Reviewed: September 24, Medically Reviewed. Why Is a Urinalysis Conducted? Even though you may feel a constant urge to urinate, you may have difficulty getting more than a small amount of urine to exit your bladder.
In cases where the infection is becoming more serious, you may experience shaking, chills, or vomiting. The urine for a urine culture can be collected in several different ways.
The most common method for collecting urine is the midstream clean-catch method. For this, you collect your urine in a cup as you urinate. A urine sample can also be collected with a urinary collection bag. This method is used most commonly with children and infants.
When the child begins urinating, the bag catches the urine, which can then be sent to a lab for analysis. In some cases, a healthcare provider needs to collect a urine sample with a catheter. To do this, they insert a thin rubber tube through the urethra and into the bladder. Once the catheter is in place, the healthcare provider is able to collect a sample. If you already have a urinary catheter in place, a healthcare provider can collect a sample by clamping the drainage end of your catheter before it reaches the drainage bag.
Once urine passes into the clamped tube, your healthcare provider uses a syringe to remove a urine sample. Urine samples should not be taken directly from a catheter collection bag because urine that has been out of the body too long may begin to grow bacteria and will not make for a good sample.
In rare cases, your doctor may need to remove a urine sample from your bladder with a needle. This procedure, called a suprapubic aspiration, is used if previous attempts at collecting an uncontaminated sample have been unsuccessful. If you are pregnant, your obstetrician may have you do a urine culture at several points during your prenatal care as a precautionary measure. UTIs are common in pregnancy and can, at times, go unnoticed.
Untreated UTIs can lead to premature labor or poor labor outcomes. Collecting a urine sample is not painful, unless you are experiencing pain while urinating because of an existing UTI. There are no risks associated with preparing for or performing a urine collection. If your doctor requests a urine sample obtained with a catheter, you may feel some pressure and discomfort as the thin tube is inserted through your urethra. These tubes are lubricated to reduce pain and make the procedure much easier.
Rarely, a catheter can create a hole in your urethra or bladder. Your doctor will discuss with you ways to reduce pain while performing the procedure.
If you have any questions or concerns about the test, the risks, or the results, speak with your doctor. For a urine culture, the urine is given several days to allow the bacteria, if present, to grow.
The sample is then examined under a microscope. If your urine shows signs of bacteria or other organisms, you will receive a positive result. If few bacteria or organisms appear, you will receive a negative test result. The person conducting the urine culture will also be able to determine which organisms are causing the infection, either by sight or through an additional test.
Results of a urine culture are typically ready in two to three days. If your result comes back positive, your doctor may prescribe an antibiotic to help eliminate the harmful bacteria. Sometimes there may be more than one kind of bacteria, or a very small bacterial presence, in your sample.
In these cases, there may be a delay in getting your result. Where can you learn more? Top of the page. What is it? Wash your hands before collecting the urine.
If the container has a lid, remove the lid of the container and set it down with the inner surface up. Clean the area around your penis or vagina. Begin urinating into the toilet or urinal. After the urine has flowed for several seconds, place the collection container in the stream and collect about 60 mL a quarter cup of this "midstream" urine without stopping the flow.
Don't touch the rim of the container to your genital area. Finish urinating into the toilet or urinal. Carefully replace the lid on the container. Wash your hands. The test will take a few minutes. You will probably be able to go home right away. The results of a urine culture are usually available in 1 to 3 days. You can go back to your usual activities right away. Your test result may show bacteria if your urine sample was contaminated.
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