At Atalmedial you always have to make an appointment. For an appointment click here.
Even to turn in containers of urine, stool, skin, hair or nail samples, you have to make an appointment.
If it states on your application form that you must be fasting before a blood sample is taken, then you may not eat for 12 hours prior to the blood sampling,and drink only water.
For blood sampling, you can also go to the office at Olympiaplein 74A, which is housed in the Sport Medisch Centrum.