1. A rapid test is mandatory now when you fly to Schiphol, the test used must be a rapid antigen or molecular test (NAAT, TMA, LAMP or PCR test). A blood test is not sufficient. Sample must have been collected no more than 4 hours prior to boarding.
2. Neither, the PCR test must have been conducted less than 72 hours before arrival at Schiphol.

Same rules on the way back.

There is more info at:
https://www.government.nl/topics/cor...nd-declaration