Frequently Asked Questions (FAQ) – Go-Keto Meter

New to using the Go-Keto meter?

Here are answers to some common questions users have when getting started with testing ketones (and glucose).

What is an E4 Notification?

E4 = Used or incorrectly handled test strip
 
Causes:
You added blood before inserting the strip.
The strip was inserted upside down or backwards.
 
Correct method:
Insert the strip first.
Wait for the blinking blood droplet.
Then apply blood to the tip.

What is an E5 Notification?

E5 = Not enough blood entered the test strip.
 
Why it happens:
You applied blood to the flat part of the strip instead of the tip (the capillary channel).
The meter couldn’t draw in the sample.
 
Tip:
Always let the tip of the strip gently touch the blood droplet — it will absorb it automatically.

Can You Measure Glucose and Ketones at the Same Time?

Yes, with one finger prick!
 
How it works:
  • The blue chip is for ketones.
  • The white chip is for glucose (comes with glucose strips).
  • The first time you use glucose strips, insert the white chip — the meter stores the calibration info.
  • After that, you can leave the blue chip in permanently.
  • You only need to insert the glucose chip again when you open a new box of glucose strips.

What Is the Small Bottle in the Box?

That’s a control solution, used to check if your meter and strips work correctly.
 
How to use it:
  • Shake the bottle and place a drop on your hand.
  • Insert a test strip into the meter.
  • Touch the strip to the drop.
  • Wait 8 seconds.
  • Read the result (e.g. 2.7).
  • ✅ Then check the control range printed on the test strip container for your control level (e.g. “Control 1” should fall between 2.6–4.0).
If it matches → your meter is accurate.
 

Don’t have your Go-Keto Meter yet?

Order now and start tracking your ketones with confidence.
✔ Europe’s #1 ketone blood test
✔ Highly accurate ketone and glucose measuring
✔ Recommended by leading keto coaches, doctors and scientists
✔ User-friendly, for professional and home use
✔ The Go-Keto Meter Kickstart Set includes everything you need for ketone measuring

The Go-Keto App

Why you will love this App to bits :
  • Calculates your GKI (Glucose-Ketone Index)
  • Clear, simple graphs to track your progress
  • Calculate and set your ideal daily macros
  • Track your meals with the Macro Tracker (beta)
  • In-app shopping for your diet at Ketofitshop