It is compulsary for knowledge migrants to go for a TB examination within the first three months in the Netherlands. Should you not do this in time, it could affect your residency permit. Should you be based in the Utrecht area, you can do this at the GGD in Utrecht (Gemeenschappelijke Gezondheidsdienst). They are based in the same building as the Utrecht Municipality (Gemeente Utrecht):
The examination entails an x-ray of your chest. You do not need to make an appointment for the examination. You can walk in any working day between 8h30 and 11h30. At the time of writing this, the cost is €45 per person and you have to take your passport with you as well as the referral form from the IND. You can download the form from their website.