There are many different ways to check ketone levels, with the two most popular home-testing devices being the blood ketone strips, or the urine ketone strips.
The similarities and differences between blood ketone test strips and urine ketone test strips are highlighted below.
|
Topic |
Blood Ketone Test Strip |
Urine Ketone Test Strip |
| Accuracy and sensitivity | Measures beta-hydroxybutyrate. This is the primary ketone produced by the body. A more accurate, real time and reliable measurement as these ketones circulate most during ketosis. | Measures acetoacetate. This ketone is excreted through urine. The levels of this ketone detected in urine can change due to hydration levels and kidney function. May not reflect real time results. |
| Time sensitivity | Provide a direct and immediate snapshot of your ketosis levels which reflects the current state of ketosis. This helps track progress more accurately. | May be less timely. In a deep state of ketosis, urine strips may show lower ketone levels since your body might be using the ketones, excreting less in the urine. |
| Reliability and consistency | Typically provide more consistent results as it is unaffected by factors such as hydration or kidney function. | Can yield inconsistent results, as urine ketone concentration varies depending on hydration, time of fasting or kidney function. |
| Stage of ketosis | Help track the precise stage of ketosis. This can be helpful for ketogenic diets or diabetes management to alter diet or medications where necessary. | Primarily measure ketone excretion, which vary through the stages of ketosis. This may give false impressions based on which stage of ketosis is tested. |
| Interpretation | Results are reflected by a number, indicating the precise concentration of ketones in your blood, making interpretation clearer and easier. | Results are generally shown as colour changes, which may be subjective, possibly leading to misinterpretations. |