nitrites in urine but no leukocytes

Hope you feel better soon. You may also get a urinalysis if you have UTI symptoms. PLoS One. All rights reserved. The following can also cause raised levels of leukocytes in the urine: Leukocytes in the urine cause different symptoms depending on the cause. Its important to take all the prescribed medication to clear up the infection completely. Here, we explore what exactly are leukocytes and nitrites, and how they are used to diagnose a possible UTI. The results of a dipstick test will be available right away; your provider may also send your urine to be analyzed under a microscope. Read our editorial policy. Patient does not provide medical advice, diagnosis or treatment. There are many things you can do to help prevent and/or improve the recovery speed of an infection. Best food forward: Are algae the future of sustainable nutrition? A negative result for . 2. Exposure to poop containing E. coli bacteria is a common cause of UTIs. In the meantime, when there are changes noted to a urine . Keep in mind that not all bacteria are capable of converting nitrate to nitrite. This product is not intended to diagnose, treat, cure, or prevent any disease. Sepsis Alliance. respect of any healthcare matters. 2023 Pharmavite LLC. ou can then finish urinating in the toilet. WBCs in the urine may mean a UTI is present. 6 users are following. So how does an LE test catch a UTI (or other infection) before you even notice it? I am starting to worry something is wrong with my kidneys . Patient aims to help the world proactively manage its healthcare, supplying evidence-based information on a wide range of medical and health topics to patients and health professionals. The old and damaged WBCs tend to get eliminated from the body in small amounts along with urine. Can poor sleep impact your weight loss goals? We do not endorse non-Cleveland Clinic products or services. These results are called positive. So, as with everything, check with your doctor about what standard reference ranges are being used to determine any abnormal presence. Does positive nitrite mean UTI? The presence of nitrites in urine most commonly means theres a bacterial infection in your urinary tract. Healthy urine contains nitrates, a type of nitrogen chemical. This is because granulocytic cells all have esterases in them. as being in breach of those terms. If youre pregnant, your doctor may want to test your urine for nitrites and other factors at several points in your prenatal care as a precautionary measure, even if you dont have symptoms of a UTI. appropriate medical assistance immediately. An official website of the United States government. government site. Have burin . https://patient.info/forums/discuss/positive-nitrites-negative-lukocytes-what-is-it--300269. This result may occur if: Healthcare providers often perform urine tests as part of routine physical exams. All rights reserved. A more complicated UTI might require a longer course of antibiotics that could take up to two weeks or be given intravenously. Kidney infections often start in the lower urinary tract but spread to the kidneys. Leukocytes in urine no nitrates does not immediately discard a urinary tract infection. Epub 2019 Dec 3. What causes nitrites in urine? When you have more of these than usual in your urine, it's often a sign of a problem somewhere in your urinary tract. She has amassed many hours in the laboratory analysis of urine, including dipstick, microscopic examination, and culturing of specimens. Clin Infect Dis. did you find out what it was? When bacteria enter your urinary tract, the bacteria turn these nitrates into a different nitrogen chemical called nitrites. A block in urine flow can result in presence of blood in urine. Roberts JR. Urine dipstick testing has limitations, but is still useful in the ED. Urine Having Leukocytes Without Nitrates: Causes and Treatments. An absence of leukocyte esterase in the urine means that the urine is not likely to contain white blood cells, so it is not likely to be carrying infectious agents. Normally no nitrites are detected in the urine. dfghjfghj 21 Comments - Posted Aug 11 How did you guys LIVE through this? Any medical information published on this website is not intended as a substitute for informed medical advice and you should not take any action before consulting with a healthcare professional. What does this mean? An unusually high number of leukocytes in the urine indicates inflammation or infection along the urinary tract, often in the bladder or . NITRITES Nitrites normally are not found in urine but result when bacteria reduce urinary nitrates to nitrites. Bono MJ, et al. A urinalysis detects nitrites in urine. The site is secure. The presence of nitrites in the urine is highly specific to certain bacterial infections. Cleveland Clinic Community Care puts patients first by offering comprehensive, coordinated, personalized healthcare. https://patient.info/forums/discuss/nitrites-but-no-uti-583543. i have a lower back discomfort. Symptoms include severe abdominal or lower back pain, confusion, and fever. 5. What does it mean if you have leukocytes in urine with no nitrates? i am having the same problem and there is no information anywhere! I am continuing to drink more water than usual, and Im also taking over the counter antibacterial tablets for UTI. 2014 Jun 23;1(1):ofu019. When you have leukocytes in urine but no nitrates, it may also indicate a urinary tract infection. A false-positive result can be caused by various factors including: A dirty catch urine sample may also contaminate a specimen with leukocytes from the vagina, which is why you may be asked to clean yourself and catch urine midstream; however, the current scientific evidence suggests that cleansing procedures may not be necessary as they have not been shown to decrease urine contamination significantly. Federal government websites often end in .gov or .mil. This mechanism might explain why urinary acidification and vitamin C may be effective in the treatment of bacteriuria. Kidney disease causes itchy skin, known as pruritis, most often in the advanced stages of the disease. What does this mean? Urine dipstick testing has limitations, but is still useful in the ED. However, some types of bacteria increase the amount of nitrites you pass through your urine. I have been in a flare since a UTI. In many cases, your UTI symptoms should begin to improve within a few days of starting antibiotic treatment. Patient is a UK registered trade mark. No blood should be present in urine. Also, a person AFABs urethral opening is closer to the anus, where stool comes out. If your nitrite test comes back positive and your healthcare provider determines you have a mild UTI, you'll likely be prescribed a short course of broad-spectrum antibiotics such as trimethoprim-sulfamethoxazole (TMP-SMX) that you'd take for around three days. Posted Barbara Hebert, MLS( ASCP) CM, is a Medical Laboratory Scientist in rural Montana. A urine culture usually takes about two to three days to be completed, sometimes longer depending on the type of bacteria. Again, if you have any questions regarding your test results, please talk with your doctor ASAP, especially if your symptoms are unresolved or worsening. The doctor will order additional tests as needed. We link primary sources including studies, scientific references, and statistics within each article and also list them in the resources section at the bottom of our articles. So, if you have nitrites in your urine, it usually means that you have a urinary tract infection (UTI). Nitrite and leucocyte esterase are indicators of urinary tract infection. They may prescribe antibiotics to treat the UTI. Large amounts of NO were released from infected nitrite-containing urine after mild acidification. I am a 32 year old woman. This test is usually performed at the same time of the nitrites in urine test. Be sure to follow your doctors instructions and take the entire course of antibiotics. When specific bacteria enter the urinary tract (such as E. coli, a common bacteria found in your gut), those dietary nitrates will be converted into nitrite (a compound of 1 nitrogen and 2 oxygen molecules). How Viagra became a new 'tool' for young men, Ankylosing Spondylitis Pain: Fact or Fiction, Learn more about the differences between bladder infections and UTIs here, Learn about the differences between kidney infections and UTIs here, Discover 10 ways to prevent kidney stones here, Learn more about the side effects of holding in urine here, https://www.ncbi.nlm.nih.gov/books/NBK470195/, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4758505/, https://www.cdc.gov/antibiotic-use/uti.html, https://www.nhs.uk/conditions/urinary-tract-infections-utis/, https://www.niddk.nih.gov/health-information/urologic-diseases. Learn the symptoms of UTIs and how to. You should get immediate results. Use of the forums is subject to our Terms of Use These infections can affect any part of the urinary system, including the bladder, urethra, and kidneys. Only culture testing can tell if a bacteria is present. when i do a dipstick test at home it turns purple for leukocytes but is negative for nitrites. A urinary tract infection (UTI) is a common cause of leukocytes in the urine. It is doubtful that urine contains white blood cells if no leukocyte esterase is present. What antibiotics treat nitrite positive UTI? Leukocyte esterase Leukocyte esterase is an enzyme present in most white blood cells. A dipstick urinalysis test is easy and offers immediate results, so your healthcare provider may use one to check for nitritesespecially if a UTI is already suspected. They are not usually present in the urine, so when they are present, it can, Nitrites appear in the urine when a person has a bacterial infection in their bladder, ureter, or kidneys. Am J Obstet Gynecol. I cant seem to find answers anywhere regarding ruined with nitrite and no leukocytes, only the other way around. Urinalysis and Body Fluids: A Colortext and Atlas, Karen Munson Ringsrud and Jean Jorgenson Linne, Copyright 1995. The bacteria enter your body through your urethra (the tube that carries urine out of your body). Have undergone the urine test wnd found nitrite positive as well as urine leukocytes to be 70. (7,8) As we all know, its very difficult to hold urine when we have a UTI. He also said this could be a sign of a bladder infection. Infection. Patient is a UK registered trade mark. Nitrate reduction to nitrite, nitric oxide and ammonia by gut bacteria under physiological conditions. Urinary tract infection in adults. Typically it involves the use of antibiotics like amoxicillin or ciprofloxacin during 3, 7, 10 or 14 days. The presence of nitrite may indicate the presence of E. coli or K. pneumonia; these bacteria produce nitrate reductase, Moreover, leukocyturia may continue even if bacteriuria has cleared spontaneously or after treatment. Normally, there shouldn't be any nitrites in the urine of humans. When they are found in someones urine, a urinary tract infection is also most likely the reason. Epub 2006 Mar 11. Notes on Positive nitrites, negative lukocytes, what is it? When both nitrites and leukocytes come up as positive, it is very likely a UTI is present. A nitrite urine test isnt always accurate, so your provider will check for other signs of a UTI. read more Diana General Practicioner Physic. Bacteria in your urinary system cause nitrites to form in your pee. I do plan on going to a doctor for other reasons at some point and if I still have symptoms Ill bring it up then, but I dont know how long Ill have to wait for that with my current situation. Blockages here can cause an increase in leukocyte production and leukocytes passing into the urine. Because nitrite testing is more accurate the longer your urine has been in your bladder, you may be asked to arrive at the office with a full bladder. The https:// ensures that you are connecting to the Normal values in urine The presence of leukocyte esterase in the urine (leukocyte esterase positive +) usually suggests a urinary tract infection (UTI) or trichomoniasis (an infectious disease caused by the parasite Trichomonas vaginalis). Given the low prevalence of enterococcal UTI, the absence of . The leukocytes may originate from sites of inflammation other than the urinary tract, particularly the female genital tract. Urinary tract infection. Most of the time, nitrates pass through our bodies without causing problems. A positive nitrite result signifies that bacteria capable of this conversion (eg, Escherichia coli, Klebsiella, Proteus, Enterobacter, Citrobacter, Pseudomonas) are present in the urinary tract. Healthy urine contains nitrates. Clin Infect Dis. A UTI can happen anywhere in your urinary tract, including your bladder, ureters, kidneys, and urethra. Stopping an antibiotic too soon can allow the infection to return and contribute to antibiotic resistance. This might indicate that you have a urinary tract infection. Patient does not provide medical advice, diagnosis or treatment. Is it possible to catch a UTI sexually without it being an STD? We propose that nitrite-producing bacteria induce their own death in acidic urine by supplying substrate for generation of bacteriostatic compounds such as NO. Overactive Bladder vs. Urinary Incontinence and UTI: Whats the Difference? The nitrates were negative but the Leuko were low positive. People who suspect leukocytes in the urine provide a urine sample that their doctor can analyze in three ways: Visual exam, dipstick test, and microscopic exam. Any ideas anyone? Verywell Health's content is for informational and educational purposes only. Other symptoms of infection or dysfunction in the urinary tract include: If a person presents with symptoms of a UTI or other urinary tract dysfunction, doctors will perform tests to diagnose the underlying cause. In vitro evaluation of a new treatment for urinary tract infections caused by nitrate-reducing bacteria. The lower urinary tractespecially the bladder and urethraare common sites. Leukocytes in Urine - No Nitrates Health Destination 8.04K subscribers 34K views 3 years ago The video explains what leukocytes in urine means. It's normal to have a few small urine crystals. I have had lots of cloudy wee but a sample was tested and it was clear. as being in breach of those terms. Thus, their presence is abnormal. Disclaimer. Because of the role bacteria plays in transforming nitrates into nitrites, the nitrite levels in your urine are sometimes used to help diagnose bacterial infections, specifically in the urinary tract. Furthermore, we also studied the growth of the urinary pathogen Escherichia coll in acidified nitrite-containing urine. Posted 10. For example, a urinary culture will provide more accurate and thorough results but has to be sent off to a lab, which can take a few days. The most likely reason is pregnancy. You can get strips that detect less. 2004;38(8):1150-1158. https://doi.org/10.1086/383029, 7. A sample should be sent for urine culture in all women with suspected lower UTI who: Are pregnant. Free U.S. shipping & money back guarantee. 2015;10(5):e0127490]. Please enable it to take advantage of the complete set of features! 2004;38(8):1150-1158. https://doi.org/10.1086/383029. The bacteria may travel to your bladder (the organ that holds urine), causing bladder inflammation (cystitis). Published 2015 Mar 24. doi:10.1371/journal.pone.01197128. You can still have a UTI even if the urine dipstick test doesnt detect nitrites in your pee. Unable to load your collection due to an error, Unable to load your delegates due to an error. On the other hand, leukocytes are cells of the immune system that respond to a pathologic microorganism. An LE test can also come back positive for infections such as Trichomonas and Chlamydia. Karwowska M, Kononiuk A. Nitrates/Nitrites in Food-Risk for Nitrosative Stress and Benefits. If the urine is tested positive for nitrite, it indicates a bacterial infection, although it does not pick up all the bacteria present in the urine. My GP used those UTI strip tests on me. Analysis of the sample. Through the outward expulsion of urine, it's possible to filter the blood. You can learn more about how we ensure our content is accurate and current by reading our. The dead cells are mostly eliminated through urine. Is it normal to have crystals in urine? Urinary tract infection test strips are a quick, easy, and cost effective way to test for a UTI at home. Diagnosis and treatment of urinary tract infectionsacross age groups. Wear cotton underwear and avoid tight-fitting clothing. (2000). While most cases of pyuria are due to a true urinary tract infection, some cases are observed in patients without an infection. On the other hand, leukocytes are cells of the immune system that respond to a pathologic microorganism. Nitrites can . Bacteria that cause a urinary tract infection (UTI) make an enzyme that changes urinary nitrates to nitrites. PMC If the leukocytes levels are between 0 and 10 lev/vl, then it is considered a normal result. Thats the really simplistic version, but hopefully helps to set the stage for the rest of this section. Some of the most common causes of leukocytes without nitrates in a urine sample are: The treatment will vary, depending on the cause for having an elevated number of leukocytes in your urine. Nitrates/Nitrites in Food-Risk for Nitrosative Stress and Benefits. Antioxidants. The glycemic index (GI) is a value used to measure how much a specific food increases your blood sugar levels. One tested positive for nitrites the other tested negative for luekocytes. Healthy pee shouldnt have bacteria or nitrites. This mechanism might explain why urinary acidification and vitamin C may be effective in the treatment of bacteriuria. There are a few steps doctors use to analyze urine in this procedure. The length of treatment will depend on the medication used, the dosing and the severity of infection. A negative nitrite in the urine test does not rule out a UTI. A test strip will be dipped into your urine sample; it changes color based on the chemicals found in your urine. Antioxid Redox Signal. If a UTI occurs in the bladder and the person does not seek treatment, the infection can spread to other sites, including the urinary tract and kidneys. Bookshelf Tiso M, Schechter AN. Nitrates are excreted in urine and are reduced to nitrites through the action of the enzyme nitrate reductase. This method of testing for a UTI does have its limitations, however, since nitrites give little information about what type of bacteria is causing the infection. The exact type of antibiotic youre prescribed will depend on what kind of bacteria is in your urinary tract, your medical history, and whether youre pregnant. While a positive test result is often an indication of a UTI, a negative result isnt 100% reliable. Failing to do so can lead to further bacteria spread and treatment failure. Urine, collected from healthy control subjects or from patients with infected nitrite-containing urine, was acidified and incubated in a closed syringe with varying amounts of nitrite added. For this reason, healthcare providers will sometimes use urine dipstick testing for nitrites to diagnose urinary tract infections (UTIs). oxidizing agents (such as bleach used in the manufacturing of dipsticks), when the urine is colored (which could be caused by drugs like Nitrofurantoin/Macrobid, supplements, and/or diet), AZO products (from my observations, AZO products color the supposing and can interfere with any test because of the color change), vitamin C (ascorbic acid) in large amounts, old infections (because the type of leukocyte that appears later in the infection is lymphocytes, which do not contain LE), when there is a low amount of nitrate in the urine due to low dietary nitrate intake, if the conversion of nitrite to nitrogen has occurred (for example, in specimens that have not been tested for several hours), dipsticks have been stored improperly or exposed to air, conversion of nitrate to nitrite due to bacterial contamination in an improperly collected or stored urine specimen, AZO use (your urine should be tested before any AZO use), gross blood (from my observation, because of the color, it can give a false positive on any test). Urinalysis: A comprehensive review. What bacteria cause nitrites in urine? I thought if there was infection both would be positive? feeling the need to urinate often without passing much urine. Leukocytes in Urine (No Nitrates) Even in healthy persons, the body is continually fighting pathogens that try to invade it. Wipe from front to back with toilet paper after peeing and pooping. This can co-occur with red or irritated skin, Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. Pyuria is a urinary condition related to white blood cells. This article will explain what an excess of white blood cells in the urine means, as well as how to treat a UTI. It depends. Best Pract Res Clin Gastroenterol. How long does it take for UTI symptoms to go away? Patient aims to help the world proactively manage its healthcare, supplying evidence-based information on a wide range of medical and health topics to patients and health professionals. Harmful bacteria find their way into the urinary tract and reproduce rapidly. Drinking plenty of water to flush out the bacteria is also an important step in helping you recover more quickly. About 9 days ago I had a sexual encounter and Im now feeling a very mild burning sensation when I urinate. When they are found in someone's urine, a urinary tract infection is also most likely the reason. Leukocytes in urine but no nitrates 07-01-2010, 03:28 AM. Leukocyte esterase (WBC esterase). However, having nitrites in your urine could mean you have an infection. Nitrites in urine (nitrituria) only occur when you have a urinary tract infection (UTI). Some types of bacteria are linked to higher levels of nitrite production than others. respect of any healthcare matters. Last reviewed by a Cleveland Clinic medical professional on 11/01/2022. Holding in urine can cause the bladder to weaken, making it difficult to empty. Remember, nitrituria without other symptoms of a UTI may not indicate an infection. You can also take oral supplements. We want the forums to be a useful resource for our users but it is important to remember that the forums are Urine dipstick tests for nitrites arent always reliable. . 3. You may be asked to provide a clean catch urine sample. Learn about the causes, treatment, and. The Nitrogen Cycle is important for all living organisms, and is something humans contribute to by eating foods rich in nitrate (a compound of 1 nitrogen and 3 oxygen molecules). Your healthcare provider will also evaluate your symptoms before making a diagnosis and may order additional tests if needed. Theyre able to fend off the medication that should kill them. Am Fam Physician. Methods of quantitative analysis of the nitric oxide metabolites nitrite and nitrate in human biological fluids. 'No Nitrates' when identified in the test. Total leukocyte count of 11,210 70 Views Does a total leukocyte count of 11,210 cells/cumm indicate . She also happens to be a Uqora customer! The usefulness of the nitrite test is limited, however, as nitrite production is not associated with other urinary tract pathogens such as Pseudomonas or even enterococci. Healthy urine contains nitrates, a type of nitrogen chemical. Avoid touching your genitals more than necessary through the day and if you do so, then make sure to wash your hands before and after. UTIs usually have symptoms you can notice, such as: Some people wont experience symptoms of a UTI right away. (6). I have been unwell for many months now, and almost housebound with fatigue, weakness and back, neck pain and low blood pressure and ringing in the ears. I have some test strips and the last time this happened it was positive for nitrites (went bright pink) but negative for any lukocytes. Took copro, bactrim and finally culture for UtI for 3 weeks. Urinary tract infections during pregnancy. Try our Symptom Checker Got any other symptoms? What does it mean if you have leukocytes and nitrite in your urine? Change your underwear and clean your genitals on a daily basis; in some cases, washing your undergarments and towels with a disinfectant will be needed as well. Many gram-negative and some gram-positive organisms are capable of this. These include: First, the urine is inserted visually to look for brown or red-colored urine and cloudy urine which indicates there is an infection. Having leukocytes in the urine without nitrites can also lead to a false-positive result that points to a bacterial infectionwhen there is none. Leukocyte esterase (WBC esterase). Bacteria that cause aurinary tract infection (UTI)make an enzyme that changes urinary nitrates to nitrites. Free Radic Res. Nitrates and nitrites are both forms of nitrogen. But in cases when they are detected in high quantity, it means your body is fighting an infection like bacteria infections.. A positive leukocyte esterase test result is most . Women and people assigned female at birth (AFAB) are more prone to getting nitrites in their pee. This can raise the levels of leukocytes in the urine. Rachael is a freelance healthcare writer and critical care nurse based near Cleveland, Ohio. However, high leukocyte levels in the urine may indicate an underlying infection or disruption to the urinary system. Leukocytes are also known as white blood cells, which are an important part of your immune system. In the urine, it is much lower, between zero and five WBCs per high power field. We sought to determine whether NO was generated from acidified nitrite-containing urine. Urinalysis: a comprehensive review. An infection in the upper urinary tract is more challenging to treat. Maintain a good ingestion of vitamins such as C and B to boost your immune system; these nutrients can be found in foods like cranberries, oranges, tangerine, lemon, lime, ginger, arugula, among others. Monteiro T, Gomes S, Jubete E, Aorga L, Silveira CM, Almeida MG. Sci Rep. 2019 Feb 22;9(1):2622. doi: 10.1038/s41598-019-39209-y. You pass nitrites from your body through your urine, and they're normally not a cause for concern. If you have nitrituria, your doctor may want to send your urine sample to a laboratory for a urine culture test. Among children with positive leukocyte esterase and negative nitrite, only 0.7% of cases had enterococcal UTI. Careers. Nitrites do not occur with all types of bacteria. There are different dipsticks to test for various substances in pee. yes.. they would of picked BV up at smear yes.. Hi! If blood or other substances are present in the urine, the physician may perform more tests to identify the cause of the problem. Nitrates can be normal in urine. As with other infections (vaginitis and UTIs), white blood cells respond to the site of the . Do STDs like chlamydia for example tend to cause leukocytes to appear? Development of urinary tract infections are more commonly. A quasi-reagentless point-of-care test for nitrite and unaffected by oxygen and cyanide. Last medically reviewed on November 17, 2022. Objectives: Diagnosis and treatment of urinary tract infectionsacross age groups. The test is particular to certain. Chu CM, Lowder JL. Urinary Tract Infection Facts and Statistics: What You Need to Know. (2005). Additionally, UTIs in pregnant people can be dangerous for the pregnant person and baby. Urinary Care Foundation. Pregnant women suffer more from this due to the physiological changes during pregnancy, and as the foetus grows, it puts more pressure on the kidneys further increasing chances of infection. The presence of nitrites in your urine can help your provider determine whether more testing is needed. This urine test may take place at your providers office, hospital or lab. The test strips that I use are 10LG Parameter Urine Reagent Strips which can be bought on line at a reasonable price. Would be really helpful. The number of white blood cells in the urine can increase if there is a kidney infection. A high number of leukocytes can indicate a person has kidney stones. A urinalysis (urine test) can detect nitrites in urine. This article will look at common causes of leukocytes in the urine. If there is blood in the urine it is mostly . These strips detect Leukocytes, Nitrite, Urobilinogen, Protein, pH, Blood, Specific Gravity, Ketone, Bilirubin, Glucose. And one more note: I work in a rural hospital/clinic, so we lab techs talk with the provider about what we see in the microscope. However, its important to note that white blood cells can be present in the bladder for other reasons (such as inflammatory disorders), and sometimes even after antibiotic therapy, so a positive LE test does not necessarily mean there are bacteria present (1). 2020 Apr 20;32(12):803-816. doi: 10.1089/ars.2019.7921. Leukocytes or white blood cells are blood cells involved in the immune response. Policy. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Should I look out for signs of complications. This is why your doctor considers the result of many tests and any symptoms when diagnosing a UTI. Our experts continually monitor the health and wellness space, and we update our articles when new information becomes available. July 2018;219(1):40-51. doi:10.1016/j.ajog.2017.12.231. All this to say, my infection seems very mild and uncomplicated at worst. Leukocytes can be present in urine for many, many, reasons. If you have nitrituria and are having any other symptoms of a UTI, check with a healthcare professional. Cleveland Clinic is a non-profit academic medical center. Isn't that a lot of meat. When you have leukocytes in urine but no nitrates, it may also indicate a urinary tract infection.

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nitrites in urine but no leukocytes