
Bloom Test
Bloom Kidney Test
The Bloom Kidney Test measures your cystatin C level, a well-established indicator of kidney function. The testing process only takes a few minutes and needs just a drop of blood.
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Symptoms
Symptoms of low kidney function are often unspecific. The Bloom Kidney Test can check if those symptoms might be related to your kidney function. They include:
- Itching
- Vomiting
- Swollen legs
- Nausea
- Loss of appetite
- Fatigue, weakness
- Sleep problems
- More or less urination than usual
- Muscle cramps

How it works
Performing a Bloom Test couldn’t be easier. In this short video, Anabelle guides you through the process. Try it yourself at one of Bloom’s locations, where you can test with the help of healthcare professionals.
Test nowMore than just a test result
In conjunction with the Bloom Lab and the Bloom App, the Bloom Kidney Test quantifies and interprets your test results for you. Based on research done by our medical team and established healthcare guidelines, the Bloom App can help you to read and understand your test results.
Your medical history – current symptoms, chronic illnesses, medications, and lifestyle – provide the basis for this interpretation. Your data will be encrypted and protected.

Cystatin C
Cystatin C is a well-established indicator of kidney function widely used in clinical practice by healthcare professionals. Cystatin C is a protein produced by cells that can be easily measured in your blood. Based on the cystatin C results, the glomerular filtration rate (GFR) can be estimated, which indicates how well your kidneys are working.
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Become a partner and offer the Bloom System to your patients. Get the Bloom System delivered to your home from our webshop or get in touch to learn more.
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*The Bloom Kidney Test is suitable for anyone 18 years old and above who is curious about their cystatin C level and their kidney function. The Bloom Kidney Test is not intended for detecting acute kidney injury (AKI). Do not take the Bloom Kidney Test if you are pregnant, have been diagnosed with acute kidney injury within the past 2 weeks or with chronic kidney disease or if you are a kidney transplant recipient.
**Do not take the Bloom Kidney Test if you are on dialysis treatment.
***The Bloom Kidney Test results should be interpreted with caution in case of: hyper- or hypothyroidism, inflammation, diabetes, obesity, regular smoking or corticosteroid usage, and in case of severe disease such as cancer, heart failure, liver disease and malnutrition.
Disclaimer: Currently The Bloom Kidney Test is only approved for professional use, meaning that it needs to be used in the presence of a healthcare professional.