Collection: Ketone Meters and Ketone Test Strips

Blood ketone meters, ketone test strips and breath ketone levels monitoring

A blood ketone meter is always going to give far more accurate readings than a breath ketone meter. A breath ketone meter is a useful tool, to see whether or not you are in ketosis, or to use if you are not comfortable with doing finger prick blood ketone levels. 

We have several free blood ketone meter offers on currently when you buy blood ketone test strips. 

Frequently asked questions about using a blood ketone meter 

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What time of day are is your blood ketone level the highest?

For people following a ketogenic diet, blood ketone levels often show diurnal variations with levels of ketones in the blood being the highest first thing in the morning after fasting overnight. . Many individuals experience higher ketone levels in the morning after an overnight fast, as the body has been in a state of fasting during sleep. This period of fasting typically leads to increased production of ketones by the liver.

However, it's important to note that individual responses can vary. Factors such as diet, activity level, and overall metabolic health can influence when someone might experience peak ketone levels. Additionally, the primary goal of a ketogenic diet is not necessarily to maximise blood ketone levels but to achieve and maintain a state of ketosis, where the body is using ketones as a primary source of energy.

Do ketone levels go up and down throughout the day?

Yes, ketone levels can fluctuate throughout the day based on various factors such as dietary choices, physical activity, and the timing, type and size of meals. Here are some reasons for fluctuations in ketone levels:

  1. Dietary intake: The primary driver of ketone production is the restriction of carbohydrates in the diet. When carbohydrate intake is low, the body starts breaking down fats into ketones for energy. Therefore, the type and amount of food you eat, particularly the carbohydrate content, can influence ketone levels.
  2. Fasting and time of day: Ketone levels are often higher in the morning due to the overnight fasting period. During sleep, the body relies on stored energy, including fat, leading to increased ketone production.
  3. Physical activity: Exercise can impact ketone levels. Intense physical activity may temporarily reduce ketone levels because the body prefers to use glucose for immediate energy during high-intensity exercise. However, regular physical activity can contribute to overall fat metabolism and ketone production over time.
  4. Individual variability: Each person's body responds differently to dietary changes and fasting. Some individuals may naturally experience higher ketone levels, while others may have lower levels for similar dietary practices.
  5. Hydration and electrolytes: Ketone levels can be affected by hydration status and electrolyte balance. Dehydration can lead to a concentration of ketones in the blood, potentially resulting in higher ketone readings.