Blood test in Zeist.

Yes, at 4 of the 8 locations in and around Zeist you can walk in, including de Potgieter, Fysiotherapie Akker 16 and Stichting Dorpshuis Odijk. There too you pick a one-hour arrival window in the Optimize app and confirm you are coming, so the lab expects you. The other locations draw at a time slot you schedule in the app.

No. You start online yourself, without a GP referral, and then pick a Zeist location and a time slot in the Optimize app.

You draw at a location run by Saltro or Star-shl, but you schedule and pay through Optimize, without a referral, and your results come with explanations in the Optimize app. Have a referral from your GP? Then you make the appointment with the lab itself and the results go to your GP.

At 8 locations in and around town: at the Potgieter on the Potgieterlaan and on the Laan van Vollenhove in Zeist itself, and beyond that in Bunnik, Odijk, Soesterberg, Bilthoven, Driebergen and Den Dolder. All addresses are on this page, sorted by distance.

Yes. In Driebergen you draw on the Korte Dreef, in Bunnik at the Kromme Rijn health centre on the Laan van Broekhuijzen and in Odijk at the village hall on the Rijneiland. In the app you simply pick the address that suits you best; the lab and the results are the same everywhere.

Not automatically. You draw without a referral, so your GP need not be involved: your results come with explanations in the Optimize app, and you can always take them along to a consultation yourself.

Yes. Every draw is fasted: nothing to eat or drink from midnight, only water. Appointments are therefore in the morning, until 12:00, so you only postpone breakfast. The app tells you exactly how to prepare.

Usually within 24 hours of your appointment. As soon as Saltro is done, your results appear in the Optimize app, explained per value in plain language and translated into what it means for your lifestyle.