Why without a referral?
Not everyone has symptoms. But anyone who wants to follow their health proactively shouldn't need to go through the GP for it, and people who do have symptoms can often get a broader picture from a private test than from a typical referral.
With Optimize you decide what to measure, when and where. No waiting for a referral, no justification up front.
How does this work legally?
Private blood testing is fully legal. Optimize works with certified labs and draw locations; the results are medically valid and based on the same standards as hospital laboratories.
You pay directly, no claim goes to your insurer, and it does not count towards your deductible.
What if values are off?
The Optimize app gives context per marker: the lab's reference range, where you stand and what that means, but Optimize does not diagnose or treat.
For significantly off values we recommend talking to your doctor. You can share the app's report as an attachment, that gives your doctor your full blood picture rather than a single value.
Ready to arrange a blood test without a referral? Order your blood test online, then book your draw in the Optimize app.
Test your blood valuesWhich biomarkers do you get without a referral?
The same comprehensive test as our standard blood test. Fully under your own control:
- ALT
- Albumin
- ApoB
- AST
- Bilirubin
- Creatinine
- eGFR
- Gamma-GT
- Fasting glucose
- HDL Cholesterol
- HbA1c
- LDL Cholesterol
- LDL / HDL Ratio
- Total Cholesterol
- TC/HDL ratio
- Triglycerides
- AST / ALT Ratio
- Triglycerides / HDL Ratio
- Non-HDL Cholesterol
- Atherogenic index of plasma
- TyG index
- eAG (estimated average glucose)
- FIB-4
- LDL/ApoB ratio
Beyond the comprehensive test, targeted add-ons let you go deeper into a specific marker or system.
What changes when you arrange it yourself?
Clarity on your health, in your own hands
How to arrange a blood test without a referral
Order the comprehensive test
Rather measure every year?
Book your draw in the app
Receive your results
Re-test whenever you want
Frequently asked questions
The key things about blood testing without a referral.
Yes. Private blood testing is fully legal in the Netherlands. You pay directly and no referral from the GP is required.
Take control now.
Comprehensive test
One draw at a location near you, results explained in the app.
- 52 blood values in one draw
- Results within 24 hours, in plain language
- No referral, no waiting list
- 250+ draw locations in the Netherlands
- Your trends on every retest, in the app
No referral needed · Results within 24 hours
Rather measure continuously? Core membership (€1 a day)

