URINE CULTURE TEST
Dr. Pravallika DevisettiLast Updated on 20th January 2022Table of contents
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What is the urine culture test used for?
A Urine culture test is prescribed:
- Incase of signs and symptoms related to UTI
- To diagnose urinary tract infections in the first trimester of pregnancy.
- To monitor treatment for the urinary tract infection.
- To know the susceptibility of microorganisms to various antibiotics
- In case the patient does not respond to empirical therapy
What is included in the urine culture test?
A urine culture is a method of detecting bacteria or yeast in the urine that might cause infection. Bacteria can enter the urinary tract through the urethra and cause a urinary tract infection (UTI). A urine sample is placed on an agar medium that encourages the development of bacteria. The culture is considered as negative if there is no bacterial growth.
The urine culture is considered negative if bacterial growth is less than 10,000 colonies/ml (cfu/ml) if it is 10,000 to 100,000 cfu/ml it is intermediate, but if it exceeds 100,000 cfu/ml, it indicates that Urine Infection is rampant and remedial treatment is required.
Procedure for a urine culture test
- Before beginning the process, wash your hands. Make sure to wipe around the area where you urinate from with a clean cloth or the cleaning pad provided by the lab technician.
- The lab technician visiting your house will offer you a sterile container cup. You need to urinate and collect a clean sample of urine in that container.
- You need to collect urine midstream in the container. First, pee a bit in the toilet and then stop. Then, in the cup, collect roughly around 50 – 60 ml of urine or up to the marking on the container. This will prevent bacteria that is present on the outer parts of the genitalia from getting collected in the container.
- Make sure the container does not come into contact with your skin.
- Complete your peeing in the toilet. Wash your hands after completing and put the sample in the bag, and give it to the lab technician.
How to prepare for a urine culture test?
Before Test | During the Test |
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Things to consider after the urine culture test is complete
After you receive the Urine culture test report, consult with your doctor, who’d be able to recommend the best treatment for you. Do not self diagnose your health condition.
What types of infection can urine culture tests detect?
A urine culture test is the most specific test used in the diagnosis of urinary tract infection caused by various bacteria or yeast. Urine samples can also be used to identify a variety of systemic infections and microorganisms other than those that cause UTIs.
- Detection of viruses and bacteria in the urine. Some viruses, such as human polyomavirus and congenital cytomegalovirus, are directly excreted in the urine.
- Streptococcus pneumoniae
- Legionellosis
- Dengue virus
- Sexually transmitted diseases like Chlamydia
Urine culture and sensitivity tests will help to determine which antibiotics the bacteria causing the infection is susceptible to. This helps your doctor to advise effective treatment.
How much does a urine culture test cost?*
A variety of factors determine the cost of a urine culture test. The cost of the test is determined by whether it is performed at a government or private institution. Varying private lab partners also charge different prices based on the quality of the test and the services they give. In addition, the cost of a urine culture test varies depending on the state and city. A urine culture test might cost anything from Rs 60 to Rs 450 through MFine.
*Disclaimer: The value varies based on location, time, and your preferred lab partner.
How long does it take to get the results for a urine culture test?
You can expect to get the results for the urine culture test within 48 to 72 hours after the sample is collected. However, in certain cases, depending on the location, and preferred lab partner, it may take longer.
What do abnormal urine culture test results indicate?
When bacteria or yeast are identified in the culture, the test is either “positive” or “abnormal.” This indicates that you have a urinary tract infection. Abnormal findings might also indicate that you have one of the following illnesses: kidney stones.
Other tests like sensitivity tests may be ordered to determine which bacteria or yeast are causing the infection and which drugs will be most effective in treating it. The culture may yield more than one species of bacteria.
Disclaimer: Please consult with your doctor for interpreting the test reports.
Is urine culture a definitive test?
Yes. Urine culture tests are most commonly done to diagnose any type of urinary tract infection. It helps to isolate the type of microorganism that is causing the UTI. Several microorganisms can cause a urinary tract infection, but the most common of all is Escherichia coli or E. coli.
Thus a urine culture along with signs and symptoms of the urinary tract infection is a definitive test to diagnose the cause of UTI. Sometimes your doctor might need to combine this test with Urinalysis and even a susceptibility test to find out more details about the infection.
How to read the urine culture test report?
While interpreting the urine culture report, the doctor often uses a combination of urinalysis and the signs and symptoms present. The sample collection method also plays a vital role in the quality of the report and its interpretations.
The presence of a particular type of bacteria in the form of a high growing colony unit is suggestive of a positive test.
- If the colony-forming units are more than 1,00,000 cfu/ml for a particular type of bacteria, it indicates the presence of infection.
- However, when there are specific signs and symptoms with a colony-forming unit (CFU) that is around 10000 – 100000 cfu/ml can also be considered as the presence of an infection.
- Also if the sample of the urine is collected via a catheter, a low score in between 10000 – 100000 CFU/ml may indicate the presence of an infection.
Why book a urine culture test?
A urine culture test aids in diagnosing the cause of UTI. It is critical not only for identification but also for directing suitable antibiotic prescription and therapy.
You are advised to take a Urine culture test if you have symptoms of UTI like pain or burning sensation while passing urine or increased frequency of urination, lower abdomen pain etc. Patients with severe UTIs, those who have had recurring UTIs, or those who are not responding to empirical therapy are often advised on urine culture.
Urine specimens may help in the detection of sexually transmitted infections sometimes when the sample are processed with other methods.
Urine culture test at home – how does it work?
A lab technician will visit your home when you book your test through the MFine app. You will be provided a sterile container to collect a clean urine sample.
Are there any risks involved with a urine culture test?
No. There are no risks involved. It is a painless procedure. Only in the case of collection of urine from a patient with a urinary catheter, there might be some discomfort.
What can affect the results of a urine culture test?
Contamination is one thing that can affect the result of the urine culture test. The handling of the sterile container provided to you and the urine sample collection should be carried out with utmost hygiene. Another important factor that can change the results of a urine culture test results is your medication. One should disclose all the information to the doctor about the medication being taken before booking the test.
For further assistance
Frequently Asked Questions | FAQs
Is the lab technician coming for a urine culture test sample collection vaccinated?
Yes. Our lab technicians are fully vaccinated. Further, they also ensure safety by wearing a mask, gloves and frequently sanitising themselves during the sample collection.
Does MFine provide the interpretation for the results along with the reports?
Yes, MFine provides the interpretation for the result and the reports. You can also avail a free medical consultation with a doctor to understand your reports accurately. The doctor will also advise and prescribe medicines, if required, based on the results.
How can I download my urine culture test report?
- Login to the MFine app
- Go to your profile
- Click on Attachment and Reports
- Click on Lab Report
- Download the report
Are there any discount offers running on urine culture tests?
Usually, you can avail of up to a 50% discount on urine culture tests through the MFine app. However, the discount and test price may vary based on lab partner and location.
What is the test process?
The urine sample is collected and a small amount is placed on an agar medium and incubated at body temperature for 24 to 48 hours.
– If there is any microorganism the agar medium will allow it to grow.
– The microbiologist then studies the growth of the microbes that form different types of colonies on the agar. The total number and types of colonies, size, shape and colour of colonies is used to determine the type of bacteria grown.
-If there is no harmful bacterial growth, the culture is known as “negative.” If there is any bacterial growth that can cause UTI to be found then, it’s known as “positive”.
What happens if my UTI goes undetected and untreated?
If the infection is untreated, it can migrate to the upper urinary tract from the lower part and start affecting your kidney. Bacteria can even sometimes reach your bloodstream affecting other organs and leading to a severe condition known as septicemia. Septicemia and sepsis is very serious and fatal condition that might even lead to death. Clinical manifestations include chills, fever, increased White Blood Cell count, and tiredness. If a health professional detects septicemia, they usually run a blood culture and a few other investigations and prescribe antibiotics appropriately.
Are there any other special preparations that are required to guarantee the sample's quality?
In general, no special preparation is required; For example, you may be instructed not to pee for at least one hour before the test and you will be advised to drink a glass of water 15-20 minutes before sample collection. This will assist you in producing enough urine for the test. You may be told to collect the first urine you urinate in the morning. You should always collect urine midstream not at the beginning and not at the end of urination. Antibiotics used before the test may have an impact on your test findings. Inform your healthcare provider if you have recently taken antibiotics. The quality of the sample depends upon the care taken by you and hygiene maintained while collecting the urine.
Can urine culture detect a kidney infection?
You will be advised tests like urine routine, urine culture and other tests to detect your kidney function.
Can an STD infection also be detected by using a urine culture test?
Yes. Some sexually transmitted illnesses(STI) can be detected using a urine sample. However, it is not the test of choice to diagnose STD infections. It can be used to detect STIs in children.
Specific methods are required to detect STD infections from urine samples. The doctor might advise the appropriate additional tests based on your history and symptoms.
What do I need to know about recurrent UTI?
Although UTIs can occur in any gender, recurrent UTIs is more common in girls and women. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), 1 in every 5 young adult women suffers from recurrent UTIs. It is therefore important to know the following things:
- Abnormalities of the urinary tract can increase the risk of recurrent urine infections in young children.
- Pregnancy, Diabetes, Kidney stones, sexual intercourse, tumors etc can lead to recurrent urine infections in adults.
- Patients who require prolonged urinary catheters are at risk for recurrent UTIs.
- Recurrent UTIs are more common in places like hospitals or nursing homes.
- Urine culture and sensitivity tests are needed with each episode of infection in case of recurrent UTIs.
- If you suffer from repeated UTIs, cautious antibiotic selection and completing the whole course of antibiotic therapy is necessary.