Can I receive an invoice if I test through ZIZ?

No, if you test through ZIZ you never receive an invoice.

The reason for this is that it would then be possible for the costs to be claimed from health insurers after all. 
That would be a double claim, because the health insurer's contribution is already included in the price.

Stichting ZIZ is a not-for-profit organisation and we try to keep the administrative burden on our operation as low as possible, so that we can provide STI care as cheaply and accessibly as possible. For this reason, we are also unable to make exceptions for people with foreign insurance or people who are testing for another reason.

We ask for your understanding and would like to point out that we are not obliged to issue an invoice (source).