"Bad" pee often looks cloudy, dark brown, red/pink, orange, or has a very strong/sweet/foul smell, indicating issues like dehydration, UTIs, kidney stones, liver problems (dark brown/orange), or blood. Healthy pee is typically pale yellow, so significant changes in color or strong odors warrant a doctor's visit, especially if accompanied by pain or frequent urination.
Some of those are: Red-tinged pee (blood in your urine) can be a sign of a urinary tract infection (UTI), kidney stones, or in rare cases, cancer. Reddish purple urine can be a sign of lead or mercury poisoning. Cola- or tea-colored urine or urine that smells can be a sign of kidney disease.
Hormonal alterations, elevated blood flow to the kidneys, dietary changes, hydration levels, and prenatal supplements cause these changes. Most women experience a strong-smelling urine as an early pregnancy symptom or one that has a distinct variation during the first weeks.
An orange urine could indicate a serious liver condition. Darker brown can be caused by foods or medication. Cloudy urine can indicate the presence of phosphates which can lead to kidney stones. Urine that's consistently foamy and frothy suggests a possible kidney issue.
And some medicines can give urine vivid tones, such as orange or greenish-blue. An unusual urine color also can be a sign of a health problem. For instance, some urinary tract infections can turn urine milky white. Kidney stones, some cancers and other diseases sometimes make urine look red due to blood.
If you urinate often, and your pee is very light-colored or even clear, it could be a sign of diabetes.
Bladder cancer signs and symptoms may include: Blood in urine (hematuria), which may cause urine to appear bright red or cola colored, though sometimes the urine appears normal and blood is detected on a lab test.
Dark urine
Urine that is darker than usual is a common sign of liver damage. The urine may be brown, orange or amber.
Some conditions that can cause changes in urine odor include:
Classic signs and symptoms of pregnancy
If you are dehydrated, your urine may smell like ammonia. Maple syrup urine disease. This genetic disease can cause the amino acids leucine, isoleucine and valine to build up in the blood. People with this condition may have urine that smells like maple syrup.
If possible, collect the sample when urine has been in your bladder for 2 to 3 hours. You will use a special kit to collect the urine. It will most likely have a cup with a lid and wipes. Wash your hands with soap and warm water.
Red Flags: Abnormal Urine Findings
Hematuria may indicate urinary tract infections, kidney stones, bladder cancer, or other conditions affecting the urinary system. Proteinuria: Proteinuria occurs when an abnormal amount of protein is present in the urine.
The 5 key warning signs of a bladder infection (Urinary Tract Infection or UTI) are: pain/burning during urination, frequent/urgent need to pee (even with little output), cloudy/bloody/strong-smelling urine, lower belly/pelvic pressure, and feeling like your bladder isn't empty, with fever or back pain signaling a more serious kidney infection, requiring immediate medical attention.
The "21-second pee rule" comes from a scientific discovery that most mammals over about 3 kg (like dogs, cows, elephants) empty their bladders in roughly 21 seconds, regardless of their size, due to physics involving urethra length and gravity. For humans, this serves as a loose benchmark: urinating significantly faster (e.g., under 10 seconds) or slower (over 30 seconds) might signal holding it too long or an overactive bladder, though it's not an exact diagnosis.
Symptoms of acute liver failure may include:
You could be dehydrated. It could indicate a problem with your liver or bile duct. Blood in your urine can turn it dark orange. Certain medications can turn your pee orange, including high doses of vitamin B2, phenazopyridine — a drug for urinary tract infections (UTIs), or the antibiotic isoniazid.
The three worst things for your liver are excessive alcohol, a diet high in added sugars, unhealthy fats, and salt (processed/fast foods), and overuse of certain medications (like acetaminophen/paracetamol), all leading to fat buildup (fatty liver), inflammation, and potential severe damage like cirrhosis, though lifestyle changes can often reverse early stages.
See a health care professional if you have symptoms of a bladder problem, such as trouble urinating, a loss of bladder control, waking to use the bathroom, pelvic pain, or leaking urine.
Bladder Diseases
Kidney failure can make urine smell strongly of ammonia or have a fishy odor, often due to built-up waste products (amines) or infection, signaling concentrated urine from dehydration or kidney dysfunction. Other signs alongside bad-smelling urine include foamy, bloody, or cola-colored urine, swelling, fatigue, and changes in urination, all pointing to potential kidney issues that require a doctor's evaluation.
Three key early warning signs of kidney problems are changes in urination (more or less frequent, especially at night), foamy or bloody urine, and persistent swelling, particularly around the eyes, feet, or ankles, indicating fluid retention. Other common signs include persistent fatigue, nausea, itching, and loss of appetite, as toxins build up when kidneys aren't filtering effectively.
How Does Sugar in Urine Look? Sugar in urine does not always have obvious signs but can sometimes give urine a cloudy appearance. High levels of sugar in the urine may also may your pee smell sweet.