Medyra Lexikon: Every Lab Value Explained, How to Use It
16 April 2026 · 7 min read · By Medyra
You receive a blood test result. Somewhere on the page it says CRP: 18 mg/l and there is a small H next to it, meaning high. The normal range is printed in tiny text. You have no idea what CRP is, what causes it to rise, or whether 18 is a little high or a lot high.
The Medyra Lexikon was built for exactly this moment. It is a free German medical dictionary covering 46 of the most common laboratory values, searchable, plain-language, and structured to give you the answer you actually need: what does this mean for me, and what should I ask my doctor?
What is the Medyra Lexikon?
The Lexikon lives at medyra.de/lexikon. It is a collection of individual pages, one per lab value. Each page is structured identically so you always know where to find what you need:
Plain-language summary
A 2–3 sentence explanation in simple German: what the value measures, what it means if it is high or low, and when to follow up with a doctor.
Reference range table
A colour-coded table showing the normal range, the "mildly elevated" range, and the "significantly elevated" range, with the values in the same units your lab report uses.
Possible causes
Two lists: what can cause the value to be too high, and what can cause it to be too low. These are possibilities, not diagnoses.
Questions for your doctor
Ready-to-use questions you can bring to your next appointment. You can print or screenshot the page and hand it directly to your doctor.
Related values
Links to other lab values that are commonly measured alongside this one, so you can build a complete picture.
How to find the value you are looking for
There are three ways to find any term in the Lexikon:
Method 1, Use the search bar
At the top of medyra.de/lexikon there is a live search box. Start typing the abbreviation or the full name, results filter instantly as you type. You can search by acronym (CRP, TSH, GFR) or by full German name (Kreatinin, Hämoglobin, Cholesterin). No need to press Enter, it updates immediately.
Search example
Method 2, Browse by category
The index page groups all 46 terms into 11 medical categories. If you know roughly what your result relates to, liver, kidneys, thyroid, blood count, scroll to that section and scan the list. Each category has a colour so you can orient yourself at a glance.
Method 3, Direct URL
Every term has a permanent URL in the format medyra.de/lexikon/[term]. If you know the abbreviation, you can often navigate directly, for example:
When should you use the Lexikon?
The Lexikon is most useful in four specific situations:
You just received a lab report
Look up every value marked with H (high) or L (low) before your next appointment. The Lexikon tells you what it means and gives you ready-made questions to ask your doctor, so you do not forget them under pressure.
Your doctor mentioned a value but did not explain it
Doctors often say things like "your CRP is a bit elevated, we'll watch it" without explaining what CRP is. Look it up immediately after the appointment so you understand what was said.
You are preparing for an upcoming appointment
Use the Lexikon alongside the Medyra Doctor Visit feature. Look up any values you plan to discuss, read the "Questions for your doctor" section, and then use Doctor Visit to create a structured German summary.
You are helping a family member understand their results
The Lexikon uses B1-level German, short sentences, no jargon. It is designed to be readable by anyone, including elderly relatives or people who are not native German speakers.
All 46 terms, quick reference
Here is every term currently in the Lexikon, grouped by category. Click any term to go directly to its page.
Entzündung
Stoffwechsel
Vitamine
How to read a Lexikon page
Let us walk through a real example. Suppose you received a blood test and your CRP was 22 mg/l, marked high. Here is how you would use the Lexikon page at medyra.de/lexikon/crp:
Read the plain-language summary first
The green bordered box at the top answers the essential question in 2–3 sentences. For CRP it would explain that CRP is a protein the liver produces in response to inflammation, that values above 5 mg/l suggest the body is fighting something, and that a result of 22 mg/l is moderately elevated and worth discussing with a doctor.
Check the range table
The colour-coded table shows:
Your value of 22 mg/l falls in the amber range, leicht erhöht (mildly elevated). This tells you it is not an emergency, but it is worth investigating.
Review the possible causes
The causes section lists conditions that can cause CRP to be elevated, things like bacterial infection, chronic inflammation, or autoimmune conditions. These are possibilities, not a diagnosis. Read them to understand the range of explanations, then discuss with your doctor which (if any) are relevant to you.
Copy the doctor questions
Every Lexikon page ends with 2–3 ready-made questions for your doctor. For CRP these include things like "Sollte der Wert in 2 Wochen kontrolliert werden?" (Should the value be rechecked in 2 weeks?) Screenshot these or print the page and bring it to your appointment.
Using the Lexikon together with Doctor Visit
The Lexikon and the Doctor Visit feature work together. Here is the ideal workflow before any appointment where you have abnormal lab results:
Look up each abnormal value in the Lexikon
Understand what it measures, where your result sits in the range, and what can cause it.
Note the doctor questions from each page
Write them down or screenshot them, these form the basis of your appointment agenda.
Open Doctor Visit at medyra.de/prep
Choose "I have test results" as your category. Medyra will ask you follow-up questions.
Describe what you found
Mention the abnormal values by name, using the terminology from the Lexikon pages. "My CRP was 22, which is leicht erhöht, I also have elevated LDL."
Generate your German summary
Medyra creates a structured clinical document with your findings, history, and doctor questions, all in formal German, ready to hand to your GP or specialist.
What the Lexikon does not do
The Lexikon is an educational reference, not a diagnostic tool. It does not:
- Tell you what your specific abnormal result means for your health, only a doctor can do that
- Recommend medication or treatment
- Replace a consultation, if you are worried, call your doctor
- Account for lab-to-lab variation, reference ranges can differ slightly between laboratories
⚠ Important
If you have a result that is significantly outside the normal range, especially for kidney function (GFR, Kreatinin), blood count (Hämoglobin, Thrombozyten), or liver values (GOT, GPT, GGT), contact your doctor promptly, do not wait for the next scheduled appointment.
Frequently asked questions
Is the Lexikon free?↓
Is the content medically reviewed?↓
My lab uses different units, does the Lexikon still apply?↓
Can I use this for my family members' results?↓
Will more terms be added?↓
Open the Medyra Lexikon
46 terms · Free · No account required · Updated April 2026