8 of the Best Ketone Meters to Buy in 2021

There are so many ketone meters to buy it’s hard to know which ones are best. We selected 8 of the best ketone meters market to make your search easier.

Being in ketosis is important on the keto diet. In fact, everyone on keto desperately wants to raise their ketones to reach this metabolic state. Many even hope to remain in it until they’ve reached their goals and ideally longer.

But how do you know if you’re in ketosis? One surefire way is by using ketone meters. There are two types of ketone meters to buy on the market: blood ketone meters and ketone breath analyzers. The devices measure blood ketone levels or ketones on your breath. Both are highly accurate (especially the blood meters), and some brands can measure additional metrics: blood glucose, hemoglobin, and more.

Ketone meters have an edge over ketone test strips. The latter can accurately measure ketone levels while you’re in the initial stages of ketosis. But when you’ve become keto-adapted after following keto for weeks, their accuracy diminishes. That’s why if your goal is to stay in ketosis for a really long time — ketone meters are better for gauging ketosis.

So, which ketone meters to buy in 2021? Here is a quick rundown of the best ketone meters on the market.

1. Ketone Blood Test Kit – Kiss My Keto

A simple and reasonably priced ketone testing kit for basic ketone measuring. Its main tool is a blood ketone meter with high accuracy that will read you your results within seconds! The kit also comes with a pouch, instructions, one month’s worth of test strips, a lancet holder and lancet devices, and a battery. In other words, you get everything you need to start measuring blood ketone levels. Plus, you’ll find instructional videos on Kiss My Keto’s website along with customer support.


  • FDA-certified
  • Pre-calibrated, no coding needed
  • Quick results in just 10 seconds
  • Requires a tiny bit of blood (0.5µL) for an accurate reading
  • Stores over 400 readings for long-term progress tracking
  • Comes with a 2-year warranty and a 60-day satisfaction guarantee


  • No app connection
  • Not covered by FSA/HSA

2. Precision Xtra – Blood Glucose & Ketone Monitoring System

Made by Abbott Laboratories, the Precision Xtra blood ketone meter is an oldie-but-goldie kit that monitors ketones as well as blood glucose levels. This is definitely the perfect glucose monitoring product if you’re diabetic plus on the keto diet because it kills two birds with one stone. With the kit, you’ll get a meter, a carrying case, a lancing device, and 10 lancets.


  • Accurate readings in 5-10 seconds
  • Pre-calibrated – no coding required
  • Has a large display with backlight
  • Stores 450 test results, complete with date and time
  • Can upload results to your computer with a data cable


  • No app connection
  • Test strips not covered by insurance providers
  • The website has very little info

3. KetoCoach Blood Ketone Meter Starter Kit

Keto Coach sells two products: urine test strips and this ketone meter starter kit. You can also purchase additional strips and accessories through their website. The company claims its meter is 98% accurate when compared to lab testing. It’s also affordable in the long run since the strips are sold starting from $0.59 per piece. The kit includes a case, a user guide, 10 lancets and test strips, and a lancing device.


  • Comes with a 5-year warranty
  • The website that has plenty of useful info
  • Comes with free shipping
  • The strips are individually wrapped in foil
  • Can be connected to the company’s app
  • Approved by the FDA and covered by FSA/HSA
  • Includes an Owen Mumford lancing device, for painless sampling


  • Offers refunds only for defective or unopened items/li>
  • Requires more blood than most meters

4. Nova Max Plus Blood Glucose/Ketone Meter

Another two-in-one product that can measure blood sugar as well as ketones, the Nova Max Plus meter is initially affordable and easy to use. It requires only 0.3 μm of blood and comes with a 33 Sureflex lancing device for pain-free testing. To test for ketones, you’ll have to use a different set of test strips, which are pricier than with other products. If you don’t like the transparent blue design, there’s also one available in clear black.


  • Requires the smallest amount of blood of any device
  • No coding required
  • Includes a high-quality lancet
  • Comes with a 3-year warranty
  • Covered by FSA/HSA


  • All purchases are final and non-refundable
  • No app connection
  • Not covered by FSA/HSA
  • The ketone strips are expensive

5. GlucoRX HCT & Ketone Blood Glucose Monitoring System

This glucose monitor was designed specifically for people with type 1 diabetes. The company behind it is a large UK supplier of medical devices for diabetics, but US shipping is also available. This multi-purpose device provides a complete health check by measuring blood ketone levels, glucose, and hematocrit. It can also correct blood glucose levels according to the hematocrit value to enhance accuracy. The kit includes 10 glucose test strips and 1 ketone strip as well as 10 lancets.


  • Tests hematocrit and accurately measures glucose
  • Provides averages from 7 days to up to 3 months
  • Features alarm reminders and strip ejection
  • Readings can be downloaded to GlucoRx’s software with a free USB cable
  • The company is easy to contact through customer careline
  • Affordable shipping outside the UK


  • Info on memory capacity is not available
  • The ketone strips are expensive

6. Keto-Mojo GK+ Blood Glucose & Ketone Kit

Another FDA-approved monitor, you can definitely rely on Keto-Mojo GK for easy and accurate testing. It’s easy to use straight out of the box, and the company’s website has plenty of how-to content to help you out. The Keto-Mojo GK devices syncs smoothly with the company’s free app. With this kit, you’ll get a meter, a lancet device, 2 batteries, 20 lancets, 10 glucose test strips, 10 ketone strips, and an accessory case.


  • Free app and bluetooth integration
  • Measures both glucose and ketones
  • Lifetime warranty
  • FDA approved
  • Memory stores up to 1,000 readings
  • Requires only 0.5µL of blood for accurate readings
  • Covered by FSA/HSA


  • Test strips can be expensive
  • You cannot purchase ketone strips separately

7. Ketonix Breath Ketone Meter

If you’d rather avoid drawing blood, then a keto breathalyzer may be a better option. This ketone breath meter is made by a Swedish company that’s registered in the US and other countries. It measures breath acetone and can be connected to a smartphone app to help you gauge your readings. You can also upload your results to your computer or their website. While the product is initially pricey, you won’t have to purchase add-ons as you do with blood ketone meters.


  • Designed to be used with an app
  • Automated calibration
  • Lightweight and portable
  • Option to choose between basic and professional kits
  • Affordable for long-term use


  • Provides result ranges rather than exact readings
  • Ketone breath meters are generally less accurate

8. Biosense Breath Analyzer

While this breath ketone meter is pricey, it’s also worth it. It is the only clinically-backed breath ketone meter to buy. The device relies on patent-pending technology to accurately measure ketones in your breath. The device is easy to connect to a Bluetooth-enabled app, which logs all your data and generates a personalized summary.


  • Unlimited testing and a free app
  • Comes with a micro USB-charging
  • Kit includes replacement mouthpieces and a neoprene sleeve
  • Eligible for FSA reimbursement
  • FDA-registered
  • Highly accurate thanks to unique technology


  • Expensive compared to other brands
  • The battery doesn’t last long


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