Ketone Urine, Blood, and Breath Test – What’s the difference?

Parang Mehta
Parang Mehta
July 2, 2022
7
min read
Technically reviewed by: 
Charisse Cartin
Ketone Urine, Blood, and Breath Test – What’s the difference?
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Your body produces ketones—acetone, β-hydroxybutyric acid, and acetoacetic acid—when it uses fats for energy instead of sugar. Two common situations for this are diabetes and a ketogenic diet. While your blood always contains some ketones, elevated levels indicate poor control of your diabetes.

Ketosis test strips enable you to test for ketones (sometimes erroneously called keytones) yourself, sparing you the expense and trouble of going to a laboratory. The best ketosis test strips are dependable and affordable, empowering you to take control of your health.

Uses of Ketone Testing

For people with diabetes, a ketone test can determine if they are at risk of a dangerous condition called diabetic ketoacidosis (DKA). It is more common in people with type 1 diabetes, but it can also happen to people with type 2 diabetes [1]. DKA can be life-threatening, and it is crucial to detect it early [2].

Watch for these signs of DKA:

  • Severe thirst
  • Frequent urination
  • Fast and deep breathing
  • Dry mouth
  • Fatigue
  • Fruity-smelling breath
Severe thirst is a symptom of diabetic ketoacidosis (DKA) caused by dehydration from high blood sugar levels and excessive urine output.

If you have one or more of these symptoms, you should measure your ketones and consult your healthcare provider.

Additionally, if you are on a ketogenic diet, you can measure the success of your diet plan by measuring your ketones using ketosis test strips. The ketogenic diet consists of carbohydrate restriction and forces your body to use fats for energy.

Urine Ketone Testing

Keto test strips let you perform this valuable test at home. You can pee into a container and dip the strip in it or simply hold the strip in the urine stream. The strip will change color depending on the amount of ketones in your urine.  

Urine testing can be done in your own home or your healthcare provider's office. Following the instructions carefully is crucial to getting accurate results.

Ketone test strips are inexpensive and offer you the ability to take charge of your health. You can easily test your urine for ketone levels, saving a trip to a laboratory. The immediate results enable you to seek early treatment if needed.

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Blood Ketone Testing

Blood ketone test strips are an essential part of diabetes care. These strips are easy to use at home, but you need a machine to use them. Some blood glucose meters can also test blood ketone levels. You put a blood ketone test strip into the meter, prick your finger, and put a drop of blood on the strip. The meter will display the result after processing [3].

The results of your blood ketone test can be:

  • Normal levels of blood ketones are below 0.6 millimoles per liter.
  • Levels of 0.6 to 1.5 millimoles per liter are higher than normal, and you should test again soon.
  • A blood ketone level of 1.6 to 3 millimoles per liter is often associated with ketoacidosis. You should talk with your healthcare provider.
  • Blood ketone levels of more than 3 millimoles per liter are dangerous, and you should seek immediate medical care.

Blood ketone level measurement needs a finger prick and is more invasive than urine or breath testing. However, blood levels of ketones give a more useful assessment of the immediate metabolic situation. If you suspect DKA, a blood ketone test is best.

A ketone blood test entails using a finger prick to draw a small blood sample, which is then analyzed with a digital meter to measure the concentration of ketones in the blood.

Breath Ketone Meter

Ketone breath meter readings are an alternative to painful finger pricks for ketone level measurements. It has the advantage of convenience — you don't have to draw blood or collect urine. Simply breathing into the meter gives you a reading of your ketone level. Such convenient and noninvasive measurements can guide both diabetes treatment and ketogenic diet plans.

Acetone in the breath correlates well with blood levels of ketones, glucose metabolism, and fat breakdown (lipolysis). Measuring acetone concentration in exhaled air is a sensitive method of assessing blood ketone levels. The sensitivity of breath ketone meter readings is higher than that of urine ketone [1].

Differences in the Tests

The urine ketosis test strips are the easiest to use and are good enough for routine monitoring of diabetes or a keto diet. You don't need any special equipment.

The blood ketone test is the most accurate and is best if you suspect a dangerous condition like DKA. However, you need to prick your finger to collect blood and need a machine to process the test.

The ketone breath test appears attractive but is still under evaluation and not generally available.

Test Ketones in Your Urine With Ketonox

If you're looking for a convenient way to test your ketone level, Ketonox is an at-home test strip for detecting ketones in the urine. You can use it to assess how well your ketogenic diet is working. People with diabetes can also use Ketonox to assess their insulin treatment and diabetes control. These strips are available in resealable packs, allowing use over an extended period.

This simple and affordable test enables you to monitor your health at home with clinical-level dependability. The fast, reliable results and the associated mobile app let you record and share your test data.

Ketonox is an at-home test strip used for detecting ketones in the urine.
References

[1] Y. Qiao, Z. Gao, Y. Liu, Y. Cheng, M. Yu, L. Zhao, Y. Duan, Y. Liu, "Breath Ketone Testing: A New Biomarker for Diagnosis and Therapeutic Monitoring of Diabetic Ketosis," BioMed Research International.

[2] CDC Staff, "Diabetic Ketoacidosis," Centers for Disease Control and Prevention.

[3] C. Seery, "Ketone testing," Diabetes UK.

About the Author
Parang Mehta

Parang Mehta is a freelance writer specializing in medicine, health, and health care. He writes engaging, trustworthy content that helps clients establish their expertise. Having worked in various healthcare settings for 30 years, Parang uses his own knowledge, the client's brief, and focused research to create authoritative, optimized content. Each piece is tailored to the intended readership, making complex subjects accessible to readers.

About the Reviewer
This blog was
Technically reviewed by: 
Charisse Cartin

Charisse Cartin is a talented and dedicated editor who has contributed significantly to this blog.

The blog was also reviewed by the Diagnox content team. Diagnox Staff consists of a multidisciplinary team of scientists, content writers, and healthcare professionals with an expertise to create and review high-quality, informative, accurate, and easy-to-understand content for both professionals and everyday readers. Our staff follows strict guidelines to ensure the credibility and authenticity of the information, reviewing them independently and verifying them by various scientific and technical sources to ensure accuracy. Our review team believes in delivering knowledge free from bias to improve public health and well-being.

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