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Ketone test, urine ketones
This test is used to check the level of ketones in your urine. Normally, your body burns sugar for energy. But if you have diabetes, you may not have enough insulin for the sugar in your bloodstream to be used for fuel. When this happens, your body burns fat instead and produces substances called ketones. The ketones end up in your blood and urine.
It's normal to have a small amount of ketones in your body. But high ketone levels could result in serious illness or death. Checking for ketones keeps this from happening.
People with high levels of blood sugar often have high ketone levels. If you have high blood sugar levels and type 1 or type 2 diabetes, it's important to check your ketone levels.
If you have diabetes, these things can cause your ketone levels to rise:
Blood sugar levels higher than 240 milligrams per deciliter (mg/dL)
People without diabetes can also have ketones in the urine if their body is using fat for fuel instead of glucose. This can happen with chronic vomiting, extreme exercise, or low-carbohydrate diets.
Checking your ketones is especially important if you have diabetes and:
Your blood sugar goes above 300 mg/dL
You abuse alcohol
You have diarrhea
You stop eating carbohydrates like rice and bread
You've been fasting
You've been vomiting
Your health care provider may order this test, or have you test yourself, if you:
Are often quite thirsty or tired
Have muscle aches
Have shortness of breath or trouble breathing
Have nausea or vomiting
Have a fruity smell to your breath
Your health care provider may also check for ketones in your blood if you have high levels of ketones in your urine.
If your health care provider suspects you have diabetes, he or she may order other urine tests to check for these substances:
Glucose, or blood sugar
pH, or acid level
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.
Some ketone tests give the results in numbers. Others only tell you if your ketone levels are "trace," "small," or "large." If your test strip gives you a number, you can learn your normal range. Normal results vary depending on your condition. Talk with your health care provider about your results and what levels are dangerous for you.
This test can be done at home or in a lab using test strips. Collect your urine in a clean container and put a test strip in it. The strip changes color as it reacts to the ketones.
If you do this test at home, keep a record of the results to report to your health care provider at your next visit.
This test does not pose any known risk.
Exercising strenuously, taking certain medications, and following a special diet, such as a low-carb or high-fat diet, may affect the test. Ask your doctor if you should avoid any foods before taking the test.
You may have to take this test if your fasting blood sugar levels are high. Ask your health care provider when you should take the test and if you should fast, especially if you do this test at home. Also be sure your doctor knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.