Blood tests near you.
Without a GP referral you draw at 606 locations in 314 towns, at the same labs your GP works with. Enter your postcode to see the nearest, with its first free slot.
No referral needed · results in the app within 24 hours
Updated 3 November 2026
A single blood test from €49, or Core for €1 a day.
A single blood test from €49, or Core for €1 a day.
Updated 3 November 2026
Where can you get a blood test without a referral?
At 606 locations in 314 towns, from health centres to hospital clinics. At 367 you can walk in without an appointment; they are marked "Walk-in".
With a referral from your GP you go to the lab itself. Through Optimize you test without one, on your own initiative.
Blood tests in your city.
43 cities have their own page, with the addresses, the districts and the practical side: how you get there and what you choose. 3 more cities follow soon.
North Holland5 cities
Utrecht7 cities
South Holland15 cities
Flevoland2 cities
Gelderland5 cities
Overijssel7 cities
In which towns can you get a blood test?
In 314 towns, from 's-Gravendeel to Zwijndrecht. Tap your town to see its locations on the map, with the distance and the first free slot.
All 314 towns from A to Z
All 314 towns from A to Z
How do you make an appointment for a blood test?
Start your Core membership online
Schedule your draw
Come fasted
Get your results
Processed by leading laboratories.
You draw at a location run by Star-shl, Atalmedial, Saltro, SALT, Medlon, SHO or SCAL, the same labs GPs work with.
Questions about a blood test without a referral.
The essentials before you start.
Was this what you were looking for?
Take control.
Billed annually at €365, in one payment.
- Annual blood test (60 values)
- Your biological age
- Personal action plan
- Personal AI coach
- Wearable integration
- 10% cashback in credits
No referral needed · 606 draw locations · 367 with walk-in
Rather start differently? All blood tests, from €49





















