How long does it take for a UTI (urinary tract infection) to show positive on a urine culture?

It may not! A urinary tract infection is a clinical diagnosis, and doesn't necessarily hinge on a positive urine culture. However, typical bacteria associated with uti's will test positive within 24hr. Cultures help in choosing the most appropriate antibiotic.However, keep in mind some microbes cannot be cultured, or aren't routinely cultured (e.g. Ureaplasma, chlamydia) - but can be treated with antibiotics.
Less than 24 hours. It usually takes less than 24 hours to find out whether or not enough germs in urine. Identifying growing germs and determining appropriate antibiotics against them takes another 24 hours.
Immediately. Uti is caused by bacteria multiplying in the urine. Thus bladder urine will be full of bacteria once you have a uti.

Related Questions

If the doctor found blood in urine, but the urine culture was normal, would you rule out bladder infection and uti?

Hematuria. You need to see a urologist (u). Hematuria (h) is a symptom, not a diagnosis. It could be coming from your kidney, or bladder. You need to have various tests to diagnose the cause. A renal ultrasound, an intravenous pyelogram and if these do not give you the cause, a cystoscopy where the urologist looks at your bladder. If the u finds no cause for the h, see a nephrologist as you may have a gn. Read more...

My dr 2 days ago run urine culture to check for bladder infection. No blood in urine. Dr sent me to ER to check for appenditicis. Ct scan normal, bloodwork normal, but had urine in blood 2 days later. Why does this happen? Do I actually have uti?

? Kidney stones. I would like more info. Pregnant? Using medications? What is your diet like? Participate in physical activity? Sexually active? Read more...
Consider False Pos. Urine can be tested for blood using a chemical strip dipped into the urine (dipstick) or by looking st the concentrated urine with s microscope, trying to find red blood cells. The dipstick may say there is blood when the microscopic exam shows no cells. Also, a few red blod cells from time to time may not mean anything important--you need to know how many cells how consistently. Read more...
Agree with Dr Garber. If you are on, or just finished your period, urine will show blood. Blood means red cells, without white cells UTI ( infection) is much less likely. Need to recheck urine to make sure blood is not still there. If still, with protein, need a nephrologist, if blood without protein in urine, need a urologist. Read more...

My boyfried just got over a UTI (urinary tract infection). How long is it contagious?

Noncontagious unless. he has a gonoccal (gonorrhea) or chlamydial UTI. Most UTIs are due to E. coli bacteria or other gram -ve organisms which are not contagious. Read more...
Contagious? UTIs are not contagious, so you can't catch a urinary tract infection from someone else. Good luck. Read more...

I'm a 69-year-old woman with recurring urinary tract infections. The latest shows ecoli in my urine. Why do I get these? How can I prevent them?

Urologist needed. If he found you normal and cranberry tablets did not help, try low dose antibiotic for a long time. Read more...
Frequent UTI's. Require a physician exam-culture will show proper antibiotic.- proper hygiene1when wiping after urination. Read more...
Urologist. Consider seeing a urologist for work up for frequent urinary tract infections. Office cystoscopic exam and vaginal exam are often performed. Many times low estrogen levels resulting in urethral lining atrophy is the culprit. Topical estrogen cream applied to the urethra often can make a big difference. Read more...

What are some things to do at home to help cure or relieve a UTI (urinary tract infection)?

Antibiotics + water. Home treatment is to take prescription antibiotics at home. Also drink large volumes (10 glasses per day) and urinate every hour or two. Wear cotton underwear, shower and never use bubble-bath. Avoid or treat constipation. Read more...