

How much power is in you? Find out with the Caffeine Genetics Test!
The COFFEEGEN Test shows you how your body responds to caffeine—and how to make the most of its performance-boosting effects. Find out if you’re a fast or slow caffeine metabolizer and optimize your physical and mental performance accordingly. Scientifically backed, safe, and requires only a one-time test.
What is caffeine genetics?
Caffeine can boost performance—but not for everyone. Your genetic metabolism type determines how your body breaks down caffeine and how strongly it affects you. With the Caffeine Genetics Test, you’ll find out how your body responds to caffeine—for targeted performance boosts and maximum energy at the right time.
With the COFFEEGEN test, you’ll learn:
- Which caffeine metabolism type are you – fast or slow metabolizer
- How you can optimize your physical and mental performance with caffeine
- How to avoid a caffeine-induced performance drop (up to -14%) and achieve up to +7% performance improvement.
- When is the ideal time for your caffeine intake – before training, competition, or intense mental work
In short: The COFFEEGEN Caffeine Genetics Test shows you how much caffeine you need and when to reach your personal performance peak—customized to your genes.
👉 Test now and find out how your body responds to caffeine!
There are three types of caffeine:
- Genotype CYP1A2 AA (Fast Caffeine Metabolizer)
- Genotype CYP1A2 AC (Reduced Caffeine Metabolizer)
- CYP1A2 CC (Slow Caffeine Metabolizer)
With the COFFEEGEN test you can find out which type you belong to and what that means for you in terms of your caffeine consumption.
95 percent of the metabolism takes place through the enzyme CYP1A2. In the DNA, this enzyme is encoded by the gene of the same name – and this is exactly where differences between people become apparent.
Only people of the CYP1A2 AA genotype (Fast Caffeine Metabolizer) can increase their performance through the standard dosage and intake recommendation.
People with the genotype CYP1A2 AC (Reduced Caffeine Metabolizer) and CYP1A2 CC (Slow Caffeine Metabolizer) must deviate from the standard recommendation in order to achieve an increase in performance or even prevent a drop in performance.
The COFFEEGEN test examines a specific site (rs762551) on the CYP1A2 gene. CYP1A2 is responsible for 95% of caffeine metabolism.
The different genotypes of the CYP1A2 gene determine the caffeine metabolism type. The COFFEEGEN test tells you, among other things:
- What gene-based caffeine metabolism type do you have?
- Can you influence or improve your performance with caffeine?
- What do you need to do to optimize your performance (max.: +7%) or avoid a caffeine-related drop in performance (up to -14%)?
Specifically: with what amount of caffeine and at what time do you reach your optimum?
After your order, we will send you a package with your personal test kit.
You can take a sample of mucous membrane yourself using a simple cheek swab. It's quick and uncomplicated. Simply put the swab in the enclosed tube and send the return envelope to our laboratory. The laboratory will examine your CYP1A2 gene and within the next 2 weeks you will receive your individual report with your results in the DoctorBox.
How it works

Collect your sample at home
Read the enclosed instructions carefully before starting. Collecting the saliva sample is straightforward and only takes a few steps.

Registration
Register on the COFFEEGEN website.

Send samples
Send your sample kit directly to the addressed lab using the envelope. The caffeine genetics experts will then decode your genetic information in the lab to determine exactly what type of caffeine metabolizer you are.

Your result
You’ll receive a detailed report with information relevant to you and precise dosage recommendations to help you maximize your potential—for every situation where you need to perform your best!